gtk: ref the action around gtk_action_emit_activate()
gtk: ref the action around gtk_action_emit_activate()

for the same reason we already ref the action's group in the function.

johne53/MB3Gtk-2,johne53/MB3Gtk-2,johne53/MB3Gtk-2,Distrotech/gtk,Distrotech/gtk,johne53/MB3Gtk-2,Distrotech/gtk,Distrotech/gtk,johne53/MB3Gtk-2,Distrotech/gtk