[Perl/perl5] defd3f: locale.c: Skip a debug check if no LC_CTYPE

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: defd3f3b3390b164997ff668a65b675fd2c6ac68
      
https://github.com/Perl/perl5/commit/defd3f3b3390b164997ff668a65b675fd2c6ac68
  Author: Karl Williamson <k...@cpan.org>
  Date:   2024-01-04 (Thu, 04 Jan 2024)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Skip a debug check if no LC_CTYPE

This check is done only when DEBUGGING is active; but it makes no sense
if LC_CTYPE can only be the C locale.