Adding extra connection guards to HostCoordinator

git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@220 c613c5cb-e716-0410-b11b-feb51c14d237

src/as/com/threerings/ezgame/HostCoordinator.as

@@ -158,6 +158,10 @@ public class HostCoordinator extends EventDispatcher
      */
     protected function getHostId (claimIfAvailable : Boolean = false) : Number
     {
+        if (! _control.isConnected()) {
+            return 0;
+        }
+        
         var host : Object = _control.get(HOST_NAME);
         
         if (host == null ||                                   // no host was recorded, or
@@ -167,7 +171,6 @@ public class HostCoordinator extends EventDispatcher
                 tryReplaceHost (host);
             }
             return 0;
-            
         } else {
             // otherwise, the host is present and known
             return Number(host);
@@ -181,10 +184,12 @@ public class HostCoordinator extends EventDispatcher
      */
     protected function tryReplaceHost (hostId : Object) : void
     {
+        if (_control.isConnected()) {
             debugLog("Removing old host with id " + hostId);
             _control.testAndSet (HOST_NAME, _control.getMyId (), hostId);
             debugHostStatus ();
         }
+    }
 
     /** Debug only */
     protected function debugLog (message : String) : void