Index: modules/system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.580
diff -u -p -r1.580 system.module
--- modules/system/system.module	24 Jan 2008 10:46:54 -0000	1.580
+++ modules/system/system.module	26 Jan 2008 18:38:56 -0000
@@ -1642,6 +1642,7 @@ function system_send_email_action($objec
     case 'comment':
       $comment = $context['comment'];
       $node = node_load($comment->nid);
+      break;
     case 'user':
       // Because this is not an action of type 'user' the user
       // object is not passed as $object, but it will still be available