Minor fix.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@777 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/spi/RoutingTableImpl.java

@@ -252,7 +252,7 @@ public class RoutingTableImpl extends BasicModule implements RoutingTable {
                     ((Hashtable)nameRoutes).remove(nodeJID);
                 }
             }
-            else {
+            else if (nameRoutes != null) {
                 // The retrieved route points to a RoutableChannelHandler
                 if (((RoutableChannelHandler)nameRoutes).getAddress().equals(node)) {
                     // Remove the route to this domain