Ticket #18716: 18716.2.patch

wp-admin/edit-tags.php

@@ -9 +9 @@
 /** WordPress Administration Bootstrap */
 require_once('./admin.php');
 $tax = get_taxonomy( $taxnow );
+if ( !$tax )
+        wp_die( __( 'You attempted to edit an item that doesn’t exist. Perhaps it was deleted?' ) );
 if ( !current_user_can( $tax->cap->manage_terms ) )
         wp_die( __( 'Cheatin’ uh?' ) );