Advertise worker thread can throw NullPointerException on AdvertiseListener.destroy()

AdvertiseListenerImpl can throw a NullPointerException if AdvertiseListener.destroy() completes before the worker thread is done with the socket.
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[java] Test DONE
[java] Exception in thread "Thread-30" java.lang.NullPointerException
[java] at
org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl$AdvertiseListenerWorker.run(AdvertiseListenerImpl.java:422)
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