- fixes


git-svn-id: https://gnunet.org/svn/gnunet@31408 140774ce-b5e7-0310-ab8b-a85725594a96
- simplify error handling


git-svn-id: https://gnunet.org/svn/gnunet@31409 140774ce-b5e7-0310-ab8b-a85725594a96