Don't allow the dummy DObject to be destroyed. That shouldn't happen in the normal course of

operations, but previously if someone called destroy on an uninitialized DObject or called
PresentsDObjectManager.destroyObject with its oid, it'd be destroyed.  Subscribing to objects
depends on that object existing, so if it's destroyed, the server will continue to function normally
except that subscription requests will be silently dropped.



git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5851 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/PresentsSession.java

@@ -962,7 +962,7 @@ public class PresentsSession
         // from interface ProxySubscriber
         public void eventReceived (DEvent event)
         {
-            if (event instanceof PresentsDObjectMgr.AccessObjectEvent) {
+            if (event instanceof PresentsDObjectMgr.AccessObjectEvent<?>) {
                 log.warning("Ignoring event that shouldn't be forwarded " + event + ".",
                             new Exception());
                 return;