Description of problem:

Version-Release number of selected component (if applicable):
2.3.0.CR1

Steps to Reproduce:
        final ModelNode model = new ModelNode();
        model.get(ClientConstants.OP).set("remove-messages");
        model.get(ClientConstants.OP_ADDR).add("subsystem", "messaging");
        model.get(ClientConstants.OP_ADDR).add("hornetq-server", "default");
        model.get(ClientConstants.OP_ADDR).add(destinationType, destinationName);
        try {
            this.applyUpdate(model);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
  
Additional info:
 java.lang.NullPointerException
	at org.jboss.as.messaging.jms.JMSQueueControlHandler$1.removeMessages(JMSQueueControlHandler.java:78)
	at org.jboss.as.messaging.AbstractQueueControlHandler.executeRuntimeStep(AbstractQueueControlHandler.java:310)
	at org.jboss.as.controller.AbstractRuntimeOnlyHandler$1.execute(AbstractRuntimeOnlyHandler.java:90) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:440) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:322) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:229) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:224) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:142) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:112) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:139) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:108) [jboss-as-controller-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:296) [jboss-as-protocol-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:518) [jboss-as-protocol-7.2.0.Final-redhat-3.jar:7.2.0.Final-redhat-3]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_17]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_17]
	at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_17]
	at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.0.Final-redhat-1.jar:2.1.0.Final-redhat-1]