[libcxx-commits] [libcxx] [libc++] Skip including langinfo.h on Android (PR #223749)

[William Tran-Viet via libcxx-commits]

smallp-o-p wrote:

`__get_locale_encoding()` is only used when compiling the shared library, so we could move the `<langinfo.h>` include next to it, inside the `__LIBCPP_BUILDING_LIBRARY` block, although it goes against our style guides.

https://github.com/llvm/llvm-project/pull/223749