Do not delete the cluster thread on shutdown since the thread may sometime finish after this ClusterService.shutdown and before hazelcast client destructor exit. (#315)

Author: ihsandemir

hazelcast/src/hazelcast/client/connection/ClusterListenerThread.cpp

@@ -121,7 +121,6 @@ namespace hazelcast {
                     workerThread = (util::Thread *) NULL;
                     worker->cancel();
                     worker->join();
-                    delete worker;
                 }
             }