disconnect layout handlers earlier in the function, to avoid possible

disconnect layout handlers earlier in the function, to avoid possible

2002-03-23  Havoc Pennington  <hp@pobox.com>

	* gtk/gtktextview.c (gtk_text_view_destroy_layout): disconnect
	layout handlers earlier in the function, to avoid possible
	reentrancy screwups
	(gtk_text_view_invalidate): Don't install idle handlers if
	layout == NULL, otherwise we get problems during finalization
	since clearing the buffer invalidates and puts the idle handlers
	back after we destroy the layout. #74660
	(gtk_text_view_ensure_layout): Install the validation handlers
	right after creating the layout.

	* gtk/gtktexttagtable.c (foreach_unref): call
	_gtk_text_buffer_notify_will_remove_tag(), #75126