2004-12-10  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcontainertreeview.c
	(gimp_container_tree_view_clear_items): clear all viewable cell
	renderers so they don't keep pointers to layers/masks which don't
	exist any more. Fixes the additional problem in bug #148852 but
	not the bug itself.