2005-11-27  Matthias Clasen  <mclasen@redhat.com>

	Fix two memory handling problems in GtkTreeView: (#322350,
	Søren Sandmann)

	* gtk/gtktreeview.c (gtk_tree_view_destroy)
	(gtk_tree_view_set_model): Remove all references to nodes in
	the old model.
	(gtk_tree_view_real_collapse_row): Unmark expanded_collapsed_node
	before removing the children.