-use static

git-svn-id: https://gnunet.org/svn/gnunet@34705 140774ce-b5e7-0310-ab8b-a85725594a96
-check connection state / rval

git-svn-id: https://gnunet.org/svn/gnunet@34706 140774ce-b5e7-0310-ab8b-a85725594a96
-fix double-free

git-svn-id: https://gnunet.org/svn/gnunet@34707 140774ce-b5e7-0310-ab8b-a85725594a96
-support join_msg=NULL properly

git-svn-id: https://gnunet.org/svn/gnunet@34708 140774ce-b5e7-0310-ab8b-a85725594a96
-and this is why the NULL comes FIRST

git-svn-id: https://gnunet.org/svn/gnunet@34709 140774ce-b5e7-0310-ab8b-a85725594a96
-check RV

git-svn-id: https://gnunet.org/svn/gnunet@34710 140774ce-b5e7-0310-ab8b-a85725594a96
-check RV

git-svn-id: https://gnunet.org/svn/gnunet@34711 140774ce-b5e7-0310-ab8b-a85725594a96