Fix memory leaks caused by the failure to free the result of

Fix memory leaks caused by the failure to free the result of

Sun Dec 21 23:17:01 2003  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkuimanager.c (update_node):
	(update_smart_separators):
	(_gtk_menu_is_empty):
	(find_menu_position):
	* gtk/gtktreeview.c (gtk_tree_view_search_dialog_destroy):
	* gtk/gtkcombobox.c (gtk_combo_box_relayout_item):
	(gtk_combo_box_relayout): Fix memory leaks caused by the
	failure to free the result of gtk_container_get_children().
	(#127576, Yao Zhang)