[Perl/perl5] 0e169c: fix printf format warning in regexp debug output

[Hugo van der Sanden via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 0e169c4752dcc3ea611a9d60bfe48ac8c5a82d5b
      
https://github.com/Perl/perl5/commit/0e169c4752dcc3ea611a9d60bfe48ac8c5a82d5b
  Author: Hugo van der Sanden <h...@crypt.org>
  Date:   2022-04-12 (Tue, 12 Apr 2022)

  Changed paths:
    M regexec.c

  Log Message:
  -----------
  fix printf format warning in regexp debug output