only try to strcmp or strlen if we managed to normalize and casefold the

only try to strcmp or strlen if we managed to normalize and casefold the

Wed Dec 17 23:31:19 2003  Kristian Rietveld  <kris@gtk.org>

	* gtk/gtktreeview.c (gtk_tree_view_search_equal_func): only
	try to strcmp or strlen if we managed to normalize and casefold
	the string correctly. Fixes crashes with non-UTF8 strings.
	(#121617, Patch from Tim-Philipp Müller).