[libcxx-commits] [libcxx] [libc++][windows] Use _wsetlocale() in __locale_guard (PR #160479)

[Louis Dionne via libcxx-commits]

ldionne wrote:

Note that I don't have any problem with this patch, the only question is about the 03 frozen headers and whether we want to modify them. CC @philnik777 

https://github.com/llvm/llvm-project/pull/160479