Change the mode in DHT disconnect handler.


git-svn-id: https://gnunet.org/svn/gnunet@34185 140774ce-b5e7-0310-ab8b-a85725594a96
- fixes


git-svn-id: https://gnunet.org/svn/gnunet@34186 140774ce-b5e7-0310-ab8b-a85725594a96