[Bug libstdc++/97949] Recursive calls of std::call_once together with cout leads to deadlock under mingw64

[fiesh at zefix dot tv via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97949

--- Comment #5 from fiesh at zefix dot tv ---
But will it be fixed for 13^W14^W15? :-)