Index: update.php
===================================================================
RCS file: /cvs/drupal/drupal/update.php,v
retrieving revision 1.211.2.2
diff -u -p -u -p -r1.211.2.2 update.php
--- update.php	8 Apr 2007 00:54:04 -0000	1.211.2.2
+++ update.php	15 Aug 2007 16:09:40 -0000
@@ -289,6 +289,9 @@ function update_fix_watchdog() {
  */
 function update_data($module, $number) {
   $ret = module_invoke($module, 'update_'. $number);
+  if (empty($ret) || !is_array($ret)) {
+    $ret = array();
+  }
   // Assume the update finished unless the update results indicate otherwise.
   $finished = 1;
   if (isset($ret['#finished'])) {