overrides: Try hard to make the query writable in the pad query function
Summary: We know that the bindings will get an extra ref but we know that it is not actually needed, so we are safe to decrease the refcount by one in that particular context making sure we give PyGI its ref back when we are done. Reviewers: Mathieu_Du Differential Revision: http://phabricator.freedesktop.org/D41 https://bugzilla.gnome.org/show_bug.cgi?id=746329