1420f62dfa
This avoid disconnecting all signals if we are waiting for different actions to be added, leading to incomplete menu. Previously if we were waiting for 2 different actions in 2 different sections, the first action-added signal would disconnect the 2nd signal handler as well, so the model of that section would not be updated when the 2nd action is added. https://bugzilla.gnome.org/show_bug.cgi?id=694612