removed a useless g_return_if_fail().

2001-11-23  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpcontainer.c: removed a useless g_return_if_fail().

	* app/widgets/gimpcontainereditor.h: removed GimpViewType enum.

	* app/widgets/widgets-types.h: added it here.

	* app/widgets/gimpcontainerview-utils.[ch]: added a utility function
	which gets the GimpContainerView out of a GimpDockable.

	* app/widgets/gimpdialogfactory.[ch]: added support for saving and
	loading of each GimpDockable's preview size. Store the dialog's
	default preview size in the GimpDialogFactoryEntry.  Pass the
	preview_size to each created dialog.

	* app/gui/menus.c: added menu items for setting the preview_size
	and switching between list and grid view. Removed the item
	overkill in the "Add Tab" submenu.

	* app/gui/dialogs-commands.[ch]: added callbacks for the new items.

	* app/widgets/gimpdockbook.c: set the item's state before showing
	the menu.

	* app/errors.c
	* app/gui/dialogs-constructors.[ch]
	* app/gui/dialogs.c
	* app/gui/edit-commands.c
	* app/gui/gui.c
	* app/gui/indicator-area.c
	* app/gui/toolbox.c: changed accordingly.

	* app/tools/selection_options.[ch]: cleaned up the selection
	options and added some tooltips. Much more to do...

app/core/gimpcontainer.c

@@ -686,7 +686,6 @@ gimp_container_remove_handler (GimpContainer *container,
   GimpContainerHandler *handler;
   GList                *list;
 
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GIMP_IS_CONTAINER (container));
   g_return_if_fail (id != 0);