[OPENMP]Add -Wunintialized to the erroneous tests for future fix PR42392,
NFC.

llvm-svn: 365334
diff --git a/clang/test/OpenMP/target_simd_collapse_messages.cpp b/clang/test/OpenMP/target_simd_collapse_messages.cpp
index 8bf2c3b..89b9402 100644
--- a/clang/test/OpenMP/target_simd_collapse_messages.cpp
+++ b/clang/test/OpenMP/target_simd_collapse_messages.cpp
@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -verify -fopenmp %s
-// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
+// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s -Wuninitialized
 
-// RUN: %clang_cc1 -verify -fopenmp-simd %s
-// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 %s
+// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
+// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 %s -Wuninitialized
 
 void foo() {
 }