Pass in the expected type to readObject anywhere the code would clearly convert the wrong type to null anyway

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5440 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/crowd/chat/data/UserMessage.as

@@ -78,7 +78,7 @@ public class UserMessage extends ChatMessage
     override public function readObject (ins :ObjectInputStream) :void
     {
         super.readObject(ins);
-        speaker = (ins.readObject() as Name);
+        speaker = (ins.readObject(Name) as Name);
         mode = ins.readByte();
     }
 

src/as/com/threerings/crowd/chat/data/UserSystemMessage.as

@@ -51,7 +51,7 @@ public class UserSystemMessage extends SystemMessage
     override public function readObject (ins :ObjectInputStream) :void
     {
         super.readObject(ins);
-        speaker = (ins.readObject() as Name);
+        speaker = (ins.readObject(Name) as Name);
     }
 
     // from interface Streamable