additional fix for fo:r https://issues.apache.org/jira/browse/AMQ-3921 make sure on selector change that we remove the subscription from the list so that the updated one gets put back in.

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1359952 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/broker/region/Topic.java

@@ -220,6 +220,9 @@ public class Topic extends BaseDestination implements Task {
                     // Need to delete the subscription
                     topicStore.deleteSubscription(clientId, subscriptionName);
                     info = null;
+                    synchronized (consumers) {
+                    	consumers.remove(subscription);
+                    }
                 } else {
                     synchronized (consumers) {
                     	if (!consumers.contains(subscription)) {