-fix crash in testcase

git-svn-id: https://gnunet.org/svn/gnunet@34622 140774ce-b5e7-0310-ab8b-a85725594a96
-doxygen, indentation

git-svn-id: https://gnunet.org/svn/gnunet@34623 140774ce-b5e7-0310-ab8b-a85725594a96
Fix empty tunnel detection

git-svn-id: https://gnunet.org/svn/gnunet@34624 140774ce-b5e7-0310-ab8b-a85725594a96
- update test config

git-svn-id: https://gnunet.org/svn/gnunet@34625 140774ce-b5e7-0310-ab8b-a85725594a96