[Bug libstdc++/113663] [MinGW] std::filesystem::hard_link_count always returns 1

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113663

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk. I'd like to backport this too though, so I'll keep the ticket
open.