fix logging for failed solutions + cfg


git-svn-id: https://gnunet.org/svn/gnunet@33278 140774ce-b5e7-0310-ab8b-a85725594a96
fix check


git-svn-id: https://gnunet.org/svn/gnunet@33279 140774ce-b5e7-0310-ab8b-a85725594a96