Use va_copy instead of __va_copy to fix building libomp against musl libc

Fixes https://bugs.llvm.org/show_bug.cgi?id=34040

Patch by Peter Levine

Differential Revision: https://reviews.llvm.org/D36343


git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@311269 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed