[Perl/perl5] 0d4292: gv.c - use SVf_QUOTEDPREFIX in error message

[Yves Orton via perl5-changes]

  Branch: refs/heads/yves/quoted_prefix_followup
  Home:   https://github.com/Perl/perl5
  Commit: 0d429258d1ae456c9a10c1951487ee9443e3c7d5
      
https://github.com/Perl/perl5/commit/0d429258d1ae456c9a10c1951487ee9443e3c7d5
  Author: Yves Orton <demer...@gmail.com>
  Date:   2022-08-26 (Fri, 26 Aug 2022)

  Changed paths:
    M gv.c

  Log Message:
  -----------
  gv.c - use SVf_QUOTEDPREFIX in error message

I overlooked this case when SVf_QUOTEDPREFIX was introduced