[Perl/perl5] 05b8d3: Don't mortalize my_localeconv() for internal use

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 05b8d3da76ae0dad22084a59705bcd769e24d06b
      
https://github.com/Perl/perl5/commit/05b8d3da76ae0dad22084a59705bcd769e24d06b
  Author: Karl Williamson <k...@cpan.org>
  Date:   2024-02-08 (Thu, 08 Feb 2024)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Don't mortalize my_localeconv() for internal use

For external consumption, retain the mortalization; but for internal
explicitly decrement the reference count when done.