[Bug c++/92562] Allow [[maybe_unused]] in class member declaration

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92562

--- Comment #4 from Drea Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Drea Pinski from comment #3)
> Fixed in GCC 12.

With r12-1405-gc0f769fa3114ea .