2006-04-18  Morten Welinder  <terra@gnome.org>

	* src/workbook-view.c (wb_view_save_as, wb_view_save,
	wb_view_sendto): Hold a ref to the workbook while the save is in
	progress.  Makes #338847 go away, even if the underlying cause has
	not been fixed.

	* src/wbc-gtk.c (cb_regenerate_window_menu): Safely handle a
	control that no longer has a view (and thus a workbook).

	* src/workbook-control.c (wb_control_get_workbook): Handle NULL
	view.
	* src/workbook-control-gui.c (wbcg_view_changed): Simplify after
	above change.