Fix ignored attributes compiler warning

[GNL10]

No description provided.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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[firewave]

Thanks for your contribution. How do you want to be credited?

For completeness here's the warning in question:

/mnt/s/GitHub/cppcheck-fw/cli/filelister.cpp: In function ‘std::string addFiles2(std::__debug::list<FileWithDetails>&, const std::string&, const std::__debug::set<std::__cxx11::basic_string<char> >&, bool, const PathMatch&, bool)’:
/mnt/s/GitHub/cppcheck-fw/cli/filelister.cpp:224:45: warning: ignoring attributes on template argument ‘int (*)(DIR*)’ [-Wignored-attributes]
  224 |     std::unique_ptr<DIR, decltype(&closedir)> dir_deleter(dir, closedir);
      |                                             ^

[GNL10]

Hi,
"Goncalo Mao-Cheia" works :).