Added a compilation test for a free function with a class parameter named "ret".

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>

tests/Basic/Basic.cpp

@@ -69,4 +69,9 @@ Foo Hello::RetFoo(int a, float b)
 int Hello::RetEnum(Enum e)
 {
     return (int)e;
-}
+}
+
+int unsafeFunction(const Bar& ret)
+{
+    return ret.A;
+}

tests/Basic/Basic.h

@@ -60,4 +60,6 @@ public:
     int AddBar2(Bar2);
 
     int RetEnum(Enum);
-};
+};
+
+int unsafeFunction(const Bar& ret);