Possible bug in ticket status upon user edit?

When a user edits a ticket, the status does not get set to $config->ticket_status_when_customer_add_comment because $data is undefined. This occur when using the email link for unauthenticated edits. I have not tested against authenticated. Here's the patch I've applied on our end:

ndex: Ticket.php
===================================================================
--- Ticket.php    (revision 930)
+++ Ticket.php    (working copy)
@@ -587,7 +587,9 @@
 
         $row->store();
 
-        if ($row->user_id == $ticket->user_id || isset($data))
+        $tmpdata = $input->getData(false);
+
+        if ($row->user_id == $ticket->user_id || isset($tmpdata))
         {
             $isCustomerAddComment = true;
         }
@@ -602,7 +604,9 @@
         }
         elseif ($isCustomerAddComment)
         {
-            $ticket->status_id = $config->ticket_status_when_customer_add_comment;
+            if ( $ticket->status_id != $config->new_ticket_status_id) {
+                $ticket->status_id = $config->ticket_status_when_customer_add_comment;
+            }
         }
         else
         {

The second edit could be skipped. We don't want a new ticket to have anything other than new, even if a user edits (they might be providing more information).

Thank you.

I created a step-by-step doc with some debugging info:

docs.google.com/document/d/1g7SyOwYdTiWq...-4g/edit?usp=sharing