-do run with proxy type NONE

git-svn-id: https://gnunet.org/svn/gnunet@34775 140774ce-b5e7-0310-ab8b-a85725594a96
-actually, require proxy option to be empty, cleaner

git-svn-id: https://gnunet.org/svn/gnunet@34776 140774ce-b5e7-0310-ab8b-a85725594a96
fix #3589

git-svn-id: https://gnunet.org/svn/gnunet@34777 140774ce-b5e7-0310-ab8b-a85725594a96
-fix trivial double-free

git-svn-id: https://gnunet.org/svn/gnunet@34778 140774ce-b5e7-0310-ab8b-a85725594a96