- dont use pointer after free

git-svn-id: https://gnunet.org/svn/gnunet@33924 140774ce-b5e7-0310-ab8b-a85725594a96
- verbose debug

git-svn-id: https://gnunet.org/svn/gnunet@33925 140774ce-b5e7-0310-ab8b-a85725594a96
- fix #3483

git-svn-id: https://gnunet.org/svn/gnunet@33926 140774ce-b5e7-0310-ab8b-a85725594a96