I'm pretty sure we never read Credentials on the client...

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5909 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/presents/net/Credentials.as

@@ -43,7 +43,7 @@ public /* abstract */ class Credentials
     public function readObject (ins :ObjectInputStream) :void
         //throws IOError
     {
-        // nada
+        throw new Error(); // we never read Creds on the client
     }
 }
 }