Add curley brackets to case statement that declares a variable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@361992 91177308-0d34-0410-b5e6-96231b3b80d8

lib/AST/ItaniumMangle.cpp

@@ -3952,7 +3952,7 @@ recurse:
       Diags.Report(DiagID);
       return;
     }
-    case UETT_OpenMPRequiredSimdAlign:
+    case UETT_OpenMPRequiredSimdAlign: {
       DiagnosticsEngine &Diags = Context.getDiags();
       unsigned DiagID = Diags.getCustomDiagID(
           DiagnosticsEngine::Error,
@@ -3960,6 +3960,7 @@ recurse:
       Diags.Report(DiagID);
       return;
     }
+    }
     if (SAE->isArgumentType()) {
       Out << 't';
       mangleType(SAE->getArgumentType());