Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive.

llvm-svn: 166280
diff --git a/clang/test/Sema/overloaded-func-transparent-union.c b/clang/test/Sema/overloaded-func-transparent-union.c
index fa0314e..acdc589 100644
--- a/clang/test/Sema/overloaded-func-transparent-union.c
+++ b/clang/test/Sema/overloaded-func-transparent-union.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 %s -fsyntax-only -verify
+// expected-no-diagnostics
 // rdar:// 9129552
 // PR9406