more fixing osx libstd++ bugs

googlemock/test/gmock-more-actions_test.cc

@@ -328,7 +328,8 @@ TEST(InvokeTest, FunctionThatTakes10Arguments) {
 // Tests using Invoke() with functions with parameters declared as Unused.
 TEST(InvokeTest, FunctionWithUnusedParameters) {
   Action<int(int, int, double, const std::string&)> a1 = Invoke(SumOfFirst2);
-  EXPECT_EQ(12, a1.Perform(make_tuple(10, 2, 5.6, std::string("hi"))));
+  tuple<int, int, double, std::string> dummy = make_tuple(10, 2, 5.6, std::string("hi"));
+  EXPECT_EQ(12, a1.Perform(dummy));
 
   Action<int(int, int, bool, int*)> a2 =
       Invoke(SumOfFirst2);