- fixed wrong round comparison code


git-svn-id: https://gnunet.org/svn/gnunet@32278 140774ce-b5e7-0310-ab8b-a85725594a96
- don't kill clients if the set operation has already been destroyed


git-svn-id: https://gnunet.org/svn/gnunet@32279 140774ce-b5e7-0310-ab8b-a85725594a96