Index: modules/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node.module,v
retrieving revision 1.640
diff -p -u -r1.640 node.module
--- modules/node.module	23 Apr 2006 05:22:05 -0000	1.640
+++ modules/node.module	23 Apr 2006 16:45:19 -0000
@@ -1657,7 +1657,7 @@ function node_form_array($node) {
   return $form;
 }
 
-function node_form_add_preview($form, $edit) {
+function node_form_add_preview($form, &$edit) {
   $op = isset($_POST['op']) ? $_POST['op'] : '';
   if ($op == t('Preview')) {
     drupal_validate_form($form['form_id']['#value'], $form);