Mod: Use override etc 2

src/Mod/Fem/Gui/AppFemGuiPy.cpp

@@ -58,10 +58,10 @@ public:
         initialize("This module is the FemGui module."); // register with Python
     }
 
-    virtual ~Module() {}
+    ~Module() override {}
 
 private:
-    virtual Py::Object invoke_method_varargs(void* method_def, const Py::Tuple& args)
+    Py::Object invoke_method_varargs(void* method_def, const Py::Tuple& args) override
     {
         try {
             return Py::ExtensionModule<Module>::invoke_method_varargs(method_def, args);