Minimize chance of race condition in session handling (#1485659, #1484678)

svncommit

2009-05-12 617b4f699f2e47991c50e05528b1f9ecbc3c3d9c

 program/steps/mail/show.inc

@@ -135,9 +135,11 @@
    }

  // mark message as read
  if (!$MESSAGE->headers->seen)
  if (!$MESSAGE->headers->seen) {
    $IMAP->set_flag($MESSAGE->uid, 'SEEN');
    $RCMAIL->plugins->exec_hook('message_read', array('uid' => $MESSAGE->uid, 'mailbox' => $IMAP->mailbox, 'message' => $MESSAGE));
  }
}