Fixed #removeComponent to work well when shutting down the server.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@969 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/InternalComponentManager.java

@@ -98,7 +98,9 @@ public class InternalComponentManager implements ComponentManager, RoutableChann
         }
 
         // Remove the disco item from the server for the component that is being removed
-        XMPPServer.getInstance().getIQDiscoItemsHandler().removeComponentItem(componentJID.toBareJID());
+        if (XMPPServer.getInstance().getIQDiscoItemsHandler() != null) {
+            XMPPServer.getInstance().getIQDiscoItemsHandler().removeComponentItem(componentJID.toBareJID());
+        }
     }
 
     public void sendPacket(Component component, Packet packet) {