[OPENMP] Fix target triple of a test, which uses __int128 type

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@219114 91177308-0d34-0410-b5e6-96231b3b80d8

test/OpenMP/for_misc_messages.c

-// RUN: %clang_cc1 -fsyntax-only -fopenmp=libiomp5 -verify %s
+// RUN: %clang_cc1 -fsyntax-only -fopenmp=libiomp5 -triple x86_64-unknown-unknown -verify %s
 
 // expected-error@+1 {{unexpected OpenMP directive '#pragma omp for'}}
 #pragma omp for