graphics/pdcurs34: Build fixes for wide characters code path

[000exploit]

Summary

Fixed pdcurses build failures when wide character support is enabled. Some code paths had diverged from upstream pdcurses and did not compile correctly. Updated them to match the upstream.

Impact

This change does not affect users who do not enable wide character support in pdcurses.

Testing

Tested on a Radxa Orion O6 ARM64 host with a RISC-V rv-virt target running under RVVM.

[xiaoxiang781216]

@000exploit please fix all warnings except “Mixed case identifier found”:

0b7519594 graphics/pdcurs34: Fixes for wide char build
../nuttx/tools/checkpatch.sh -c -u -m -g 84ffa84e241f116f514257eb2d0efa7e87470ce7..HEAD
❌ Missing Signed-off-by
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:2:1: error: Relative file path does not match actual file
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:115:9: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:128:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:277:1: error: Blank line precedes right brace at line
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:295:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:312:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:339:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:349:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:387:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:551:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:568:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:595:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_getstr.c:605:34: error: Mixed case identifier found
Used config files:
    1: .codespellrc
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:151:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:205:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:250:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:272:2: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:276:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:348:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:358:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:365:2: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:391:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:403:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:415:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:426:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:447:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:468:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:482:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:505:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:598:5: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:601:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:652:5: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:655:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:676:4: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:680:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:709:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:774:34: error: Mixed case identifier found
/home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_slk.c:58: useable ==> usable
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:2:1: error: Relative file path does not match actual file
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:115:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:117:30: error: Multiple data definitions
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:117:36: error: Right bracket not on separate line
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:211:34: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:213:34: error: Multiple data definitions
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:213:40: error: Right bracket not on separate line
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:243:4: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:302:7: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:317:19: error: Mixed case identifier found
Error: /home/runner/work/nuttx-apps/nuttx-apps/apps/graphics/pdcurs34/pdcurses/pdc_util.c:336:7: error: Mixed case identifier found
Some checks failed. For contributing guidelines, see:
  https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md
Error: Process completed with exit code 1.

[000exploit]

@xiaoxiang781216 weird tool, to be honest. Fixed everything it complained about and force-pushed new commit.