Only show published items of custom post types in nav menu meta boxes. props duck_, fixes #13390.

git-svn-id: https://develop.svn.wordpress.org/trunk@14631 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/includes/nav-menu.php

@@ -951,6 +951,12 @@ function _wp_nav_menu_meta_box_object( $object = null ) {
 				'orderby' => 'id',
 				'order' => 'DESC',
 			);
+
+		// custom post types should show only published items
+		} else {
+			$object->_default_query = array(
+				'post_status' => 'publish',
+			);
 		}
 	}