issue: 403903 bug fix: removing clientSession from eventables after session_closed

Change-Id: I4d4c488f21d8b5177ebd1282ec6d5850cac8e7bf
issue: 403093 bug fix: #msgsInUse needs to be decreased on onMsgError

Change-Id: I9097900e0e0ffbba2056b19ab6fad759392160f6