Mailer on the CC list of Maniphest Task.

Summary: External user gets on the CC list of a task.

Test Plan: {F42630}

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, AnhNhan

Maniphest Tasks: T2804

Differential Revision: https://secure.phabricator.com/D5853

src/applications/maniphest/ManiphestReplyHandler.php

@@ -119,6 +119,7 @@ final class ManiphestReplyHandler extends PhabricatorMailReplyHandler {
       $xactions[] = $xaction;
     }
 
+    $task->setCCPHIDs(array($user->getPHID()));
     $ccs = $mail->loadCCPHIDs();
     if ($ccs) {
       $old_ccs = $task->getCCPHIDs();