fixing crash: cancel dead task 1004493731513019834!



git-svn-id: https://gnunet.org/svn/gnunet@32817 140774ce-b5e7-0310-ab8b-a85725594a96
improved printing


git-svn-id: https://gnunet.org/svn/gnunet@32818 140774ce-b5e7-0310-ab8b-a85725594a96