Deal gracefully with moving to a non-existent location.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1385 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/crowd/chat/client/ChatDirector.java

@@ -1,5 +1,5 @@
 //
-// $Id: ChatDirector.java,v 1.20 2002/04/30 17:27:30 mdb Exp $
+// $Id: ChatDirector.java,v 1.21 2002/05/22 21:44:54 shaper Exp $
 
 package com.threerings.crowd.chat;
 
@@ -186,8 +186,10 @@ public class ChatDirector
 
         // listen to the new object
         _place = place;
+        if (_place != null) {
             _place.addListener(this);
         }
+    }
 
     // documentation inherited
     public void locationChangeFailed (int placeId, String reason)

src/java/com/threerings/crowd/client/OccupantDirector.java

@@ -1,5 +1,5 @@
 //
-// $Id: OccupantDirector.java,v 1.1 2002/04/15 14:38:45 shaper Exp $
+// $Id: OccupantDirector.java,v 1.2 2002/05/22 21:47:14 shaper Exp $
 
 package com.threerings.crowd.client;
 
@@ -118,6 +118,7 @@ public class OccupantDirector
 
         // listen to the new one
         _place = place;
+        if (_place != null) {
             _place.addListener(this);
 
             // cache the occupant info for the occupants in this room
@@ -127,6 +128,7 @@ public class OccupantDirector
                 _ocache.put(info.getBodyOid(), info);
             }
         }
+    }
 
     // inherit documentation
     public void locationChangeFailed (int placeId, String reason)