Client deadlocks on session callback

[jamoore]

Caught in the act:

"Ice.ThreadPool.Server-0" prio=5 tid=0x01113ae0 nid=0x18fc800 waiting for monitor entry [0xb0d0a000..0xb0d0ad10]
        at omero.client.getCommunicator(client.java:343)
        - waiting to lock <0x1b9f2bd0> (a java.lang.Object)
        at omero.client$CallbackI.execute(client.java:780)
        at omero.client$CallbackI.sessionClosed(client.java:776)
        at omero.api._ClientCallbackDisp.___sessionClosed(_ClientCallbackDisp.java:103)
        at omero.api._ClientCallbackDisp.__dispatch(_ClientCallbackDisp.java:164)
        at IceInternal.Incoming.invoke(Incoming.java:166)
        at Ice.ConnectionI.invokeAll(ConnectionI.java:2045)
        at Ice.ConnectionI.message(ConnectionI.java:977)
        at IceInternal.ThreadPool.run(ThreadPool.java:575)
        at IceInternal.ThreadPool.access$100(ThreadPool.java:12)
        at IceInternal.ThreadPool$EventHandlerThread.run(ThreadPool.java:951)

"Thread-0" prio=5 tid=0x011286b0 nid=0x19cf000 in Object.wait() [0xb0f0e000..0xb0f0ed10]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x1ba0e9c8> (a IceInternal.IncomingConnectionFactory)
        at java.lang.Object.wait(Object.java:474)
        at IceInternal.IncomingConnectionFactory.waitUntilFinished(IncomingConnectionFactory.java:87)
        - locked <0x1ba0e9c8> (a IceInternal.IncomingConnectionFactory)
        at Ice.ObjectAdapterI.waitForDeactivate(ObjectAdapterI.java:281)
        at IceInternal.ObjectAdapterFactory.waitForShutdown(ObjectAdapterFactory.java:99)
        at IceInternal.ObjectAdapterFactory.destroy(ObjectAdapterFactory.java:125)
        at IceInternal.Instance.destroy(Instance.java:864)
        at Ice.CommunicatorI.destroy(CommunicatorI.java:17)
        at omero.client.closeSession(client.java:587)
        - locked <0x1b9f2bd0> (a java.lang.Object)
        at omero.client.close(client.java:330)
        at omero.client$1.run(client.java:72)

[jmoore]

r3856 should solve this one issue.