[Perl/perl5] 927b5d: utf8::upgrade: Don't coerce undef arg

  Branch: refs/heads/smoke-me/khw-upgrade
  Home:   https://github.com/Perl/perl5
  Commit: 927b5dc1dcb260cdd0df54798780788da60c369f
      https://github.com/Perl/perl5/commit/927b5dc1dcb260cdd0df54798780788da60c369f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2022-11-13 (Sun, 13 Nov 2022)

  Changed paths:
    M lib/utf8.pm
    M lib/utf8.t
    M pod/perldelta.pod
    M universal.c

  Log Message:
  -----------
  utf8::upgrade: Don't coerce undef arg

This fixes GH #20419

• [Perl/perl5] 927b5d: utf8::upgrade: Don't coerce undef arg by Karl Williamson via perl5-changes