[Perl/perl5] 9fd26f: Silence some warnings in doio.c

[Leon Timmermans via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 9fd26f3e9b4e23173dcd40bbb994f1959f93a6be
      
https://github.com/Perl/perl5/commit/9fd26f3e9b4e23173dcd40bbb994f1959f93a6be
  Author: sisyphus <sisyphus...@gmail.com>
  Date:   2024-02-03 (Sat, 03 Feb 2024)

  Changed paths:
    M doio.c

  Log Message:
  -----------
  Silence some warnings in doio.c

Partial fix for https://github.com/Perl/perl5/issues/21916


  Commit: 88356b550cd7d8595f2c45d95ded90bb7af71c25
      
https://github.com/Perl/perl5/commit/88356b550cd7d8595f2c45d95ded90bb7af71c25
  Author: sisyphus <sisyphus...@gmail.com>
  Date:   2024-02-03 (Sat, 03 Feb 2024)

  Changed paths:
    M doio.c

  Log Message:
  -----------
  Broaden the scope of the change to Perl_cando() .


Compare: https://github.com/Perl/perl5/compare/4f449b11929d...88356b550cd7