[Bug libstdc++/106772] atomic::wait shouldn't touch waiter pool if used platform wait

[valera.mironow at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106772

--- Comment #7 from Mkkt Bkkt <valera.mironow at gmail dot com> ---
Can you give example when this optimization needed and cannot be done on user,
not stdlib side?