Index: modules/book.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/book.module,v
retrieving revision 1.315
diff -u -r1.315 book.module
--- modules/book.module	6 Sep 2005 18:55:41 -0000	1.315
+++ modules/book.module	17 Sep 2005 20:29:03 -0000
@@ -674,6 +674,7 @@
   global $base_url;
   $type = drupal_strtolower($type);
   $depth = _book_get_depth($nid);
+  $node = node_load($nid);
   switch ($type) {
     case 'docbook':
       $xml = "<?xml version='1.0'?>\n";