use the second argument to the weak ref notify, cleaning up some uglyness.

use the second argument to the weak ref notify, cleaning up some uglyness.

2001-08-18  James Henstridge  <james@daa.com.au>

	* gtk/gtkaccelgroup.c (gtk_accel_group_object_destroy): use the
	second argument to the weak ref notify, cleaning up some uglyness.
	(gtk_accel_group_attach): remove and add the weak notifier when
	changing the accel groups slist.
	(gtk_accel_group_detach): same here.