minor refactoring

Signed-off-by: Valentyn Yukhymenko <[email protected]>

clang/lib/Parse/ParseDecl.cpp

@@ -6751,18 +6751,17 @@ void Parser::ParseDeclaratorInternal(Declarator &D,
     DeclSpec DS(AttrFactory);
 
     // Complain about:
-    // - rvalue references in C++03,
-    // - `^T &&` parsing ambiguity in C++2x
+    // - rvalue references in C++03
+    // - `^T &&` parsing ambiguity of compound expression with reflection in C++2x
     // but then go on and build the declarator.
     if (Kind == tok::ampamp) {
       if (D.getContext() == DeclaratorContext::ReflectOperator) {
-        std::string typeName = "T";
-        if (D.hasName()) {
-          typeName = Actions.GetNameForDeclarator(D).getName().getAsString();
-        }
+        // parser already consumed '^' token before setting this context
         Diag(Loc,
              diag::warn_parsing_ambiguity_in_refl_expression_with_ampamp_token)
-            << typeName;
+            << (D.hasName()
+                    ? Actions.GetNameForDeclarator(D).getName().getAsString()
+                    : "T");
       }
 
       Diag(Loc, getLangOpts().CPlusPlus11