Non Durable Subscription is leaking on paging if not properly closed

A memory leak was identified in the paging module. When a durable subscription was removed, the paging system was not notified, and it would keep paging for that nonexistent subscription. As a result, the resources used to maintain paging would increase and only a restart of JBoss Enterprise Application Platform would release them. The handling of durable subscriptions has been changed so that the paging system is notified, resolving the memory leak.