cfg handle


git-svn-id: https://gnunet.org/svn/gnunet@32273 140774ce-b5e7-0310-ab8b-a85725594a96
fixing crash: excess task has to be stopped when neighbour is freed


git-svn-id: https://gnunet.org/svn/gnunet@32274 140774ce-b5e7-0310-ab8b-a85725594a96