Bug 1832708 - Disable std::__throw_* wrapping on libc++ >= 14.0....

Bug 1832708 - Disable std::__throw_* wrapping on libc++ >= 14.0. r=firefox-build-system-reviewers,andi

As of libc++ 14, the functions are defined in the std namespace rather
than std::<something>, which makes them conflict with our wrapping. This
is not a problem on libstdc++ because the functions are defined in the
library itself rather than the headers.

This was the real reason behind the addition of #ifndef __wasm__ ; this
is a more generic fix for the same problem.

Differential Revision: https://phabricator.services.mozilla.com/D177841

memory/mozalloc/throw_gcc.h

@@ -8,7 +8,7 @@
 #ifndef mozilla_throw_gcc_h
 #define mozilla_throw_gcc_h
 
-#ifndef __wasm__
+#if !defined(_LIBCPP_VERSION) || _LIBCPP_VERSION < 14000
 
 #  include "mozilla/Attributes.h"