[Perl/perl5] c7342b: Perl_sv_clear: faster treatment of bodyless NVs

[Richard Leach via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: c7342b06c24013ac518d5817617c3abbef7f0a1e
      
https://github.com/Perl/perl5/commit/c7342b06c24013ac518d5817617c3abbef7f0a1e
  Author: Richard Leach <richardle...@users.noreply.github.com>
  Date:   2023-02-10 (Fri, 10 Feb 2023)

  Changed paths:
    M sv.c

  Log Message:
  -----------
  Perl_sv_clear: faster treatment of bodyless NVs

The existing fast path for SVt_NULL/SVt_IV can also be used for bodyless
SVt_NVs.