Fix the printing of constants.  Patch by Stepan Dyatkovskiy!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144079 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-diff/DifferenceEngine.cpp b/tools/llvm-diff/DifferenceEngine.cpp
index b240d8c..435cd87 100644
--- a/tools/llvm-diff/DifferenceEngine.cpp
+++ b/tools/llvm-diff/DifferenceEngine.cpp
@@ -327,7 +327,7 @@
         if (LCase) {
           if (TryUnify) tryUnify(LCase, RI->getSuccessor(I));
           LCases.erase(CaseValue);
-        } else if (!Difference) {
+        } else if (Complain || !Difference) {
           if (Complain)
             Engine.logf("right switch has extra case %r") << CaseValue;
           Difference = true;