Remove the old widget from the tool button before overwriting it with the

Remove the old widget from the tool button before overwriting it with the

Wed Apr 21 21:38:03 2004  Soeren Sandmann  <sandmann@daimi.au.dk>

	* gtk/gtktoolbutton.c (gtk_tool_button_set_label_widget,
	gtk_tool_button_set_icon_widget): Remove the old widget from the
	tool button before overwriting it with the new widget.

	(#140508, Todd Goyen)