queue-message-redistribution minor change

[gaohoward]

I got NullPointerException when run all examples together. The problem lies between
line 146 -- line 151:

for (int i = 0; i < numMessages; i += 2)
{
message0 = (TextMessage)consumer0.receive(5000); //--> possible got null message due to time delay over 5 sec.

System.out.println("Got message: " + message0.getText() + " from node 0"); //--> NPE
}

So I will change the receive(5000) to receive().