Modify Gtk::Object::~Object()?

[Kjell Ahlstedt <kjell ahlstedt bredband net>]

To people with a good knowledge of the inner workings of gtkmm.

I have attached a patch to bug 605728, 
https://bugzilla.gnome.org/show_bug.cgi?id=605728#c2.
That patch modifies Gtk::Object::_release_c_instance() and 
Gtk::Window::_release_c_instance(). I believe that the patch fixes both 
https://bugzilla.gnome.org/show_bug.cgi?id=605728 and 
https://bugzilla.gnome.org/show_bug.cgi?id=315874.
It would be great if someone else could have a look at it. As I say in 
one of the bug comments "I haven't found any problem with it, but I 
realize that the deletion of a Gtk::Widget is a delicate process that 
can easily go wrong in unusual situations."