Fix warnings caused by new CXXUuidofExprClass enumerator.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113444 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index b836f01..a70a52d 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -1617,7 +1617,8 @@
   case Expr::StmtExprClass:
   case Expr::TypesCompatibleExprClass:
   case Expr::UnaryTypeTraitExprClass:
-  case Expr::VAArgExprClass: {
+  case Expr::VAArgExprClass:
+  case Expr::CXXUuidofExprClass: {
     // As bad as this diagnostic is, it's better than crashing.
     Diagnostic &Diags = Context.getDiags();
     unsigned DiagID = Diags.getCustomDiagID(Diagnostic::Error,