2004-12-27  Matthias Clasen  <mclasen@redhat.com>

	Make the clipboard image API more robust (#162357,
	Torsten Schoenfeld):

	* gtk/gtkclipboard.c (clipboard_image_received_func): Don't
	ref the pixbuf if it is NULL.

	* gtk/gtkselection.c (gtk_selection_data_set_pixbuf):
	NULL-terminate the varargs in the call to
	gdk_pixbuf_save_to_buffer().
	(gtk_selection_data_get_pixbuf): Only use a pixbuf loader
	if there is data to load.