improved messages


git-svn-id: https://gnunet.org/svn/gnunet@32681 140774ce-b5e7-0310-ab8b-a85725594a96
no set_state to DISCONNECT_FINISHED required before free_neighbour 
fixing log output


git-svn-id: https://gnunet.org/svn/gnunet@32682 140774ce-b5e7-0310-ab8b-a85725594a96