[Perl/perl5] f877e1: fetch magic on the first stacked filetest, not the...

[Tony Cook via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: f877e124a20d4f94c82c36e6b7a99b4e9663e204
      
https://github.com/Perl/perl5/commit/f877e124a20d4f94c82c36e6b7a99b4e9663e204
  Author: Tony Cook <t...@develop-help.com>
  Date:   2020-11-11 (Wed, 11 Nov 2020)

  Changed paths:
    M pp_sys.c
    M t/op/filetest.t

  Log Message:
  -----------
  fetch magic on the first stacked filetest, not the last

fixes #18293