Fix single-node AMF assertion failure (cause runaway recursion).

BKrev: 40d22e42IsByk3WqoRIGSlETLqdUgw


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@14 fd59a12c-fef9-0310-b244-a6a79926bd2f