QPID-5211: Broker logs spurious "No valid transition..."  - merge second change from trunk.

svn merge -c 1562452 https://svn.apache.org/repos/asf/qpid/trunk



git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/0.26@1563358 13f79535-47bb-0310-9956-ffa450edef68