emitting row-has-child-toggled when the level is not in the cache does not

emitting row-has-child-toggled when the level is not in the cache does not

2005-10-24  Kristian Rietveld  <kris@gtk.org>

	* gtk/gtktreemodelsort.c (gtk_tree_model_sort_row_inserted): emitting
	row-has-child-toggled when the level is not in the cache does not
	make sense.  (This bug probably crept in during the early stages
	of GtkTreeModelSort when there wasn't a correct row-has-child-toggled
	implementation yet),
	(gtk_tree_model_sort_real_unref_node): only get the child iter
	when we will actually also use it.