If any tests fail, the test runner returns a status code of 1

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73584 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/test/MultiTestRunner.py b/utils/test/MultiTestRunner.py
index d338b35..b7ec569 100755
--- a/utils/test/MultiTestRunner.py
+++ b/utils/test/MultiTestRunner.py
@@ -332,6 +332,7 @@
     numFailures = len(byCode.get(TestStatus.Fail,[]))
     if numFailures:
         print '\nFailures: %d' % (numFailures,)
-
+        sys.exit(1)
+        
 if __name__=='__main__':
     main()