[Perl/perl5] 37a946: Appease gcc's warning that keysv may be used unini...

[Paul Evans via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 37a94617085a82b7af352df83dfd5eb4788aa27b
      
https://github.com/Perl/perl5/commit/37a94617085a82b7af352df83dfd5eb4788aa27b
  Author: Paul "LeoNerd" Evans <leon...@leonerd.org.uk>
  Date:   2022-06-08 (Wed, 08 Jun 2022)

  Changed paths:
    M op.c

  Log Message:
  -----------
  Appease gcc's warning that keysv may be used uninitialized in op.c