Fix bug in SendPortSync serialization

client/dart.js

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Bootstrap support for Dart scripts on the page as this script.
 if (navigator.webkitStartDart) {
   if (!navigator.webkitStartDart()) {
     document.body.innerHTML = 'This build has expired.  Please download a new Dartium at http://www.dartlang.org/dartium/index.html';
   }
 } else {
@@ skipping 44 matching lines @@
       return message;
     } else if (message instanceof Array) {
       var values = new Array(message.length);
       for (var i = 0; i < message.length; i++) {
         values[i] = serialize(message[i]);
       }
       return [ 'list', message.length, values ];
     } else if (message instanceof LocalSendPortSync) {
       return [ 'sendport', 'nativejs', message.receivePort.id ];
     } else if (message instanceof DartSendPortSync) {
-      return [ 'sendport', 'dart', message.receivePort.isolateId,
-               message.receivePort.portId ];
+      return [ 'sendport', 'dart', message.isolateId, message.portId ];
     } else {
       var id = 0;
       var keys = Object.getOwnPropertyNames(message);
       var values = new Array(keys.length);
       for (var i = 0; i < keys.length; i++) {
         values[i] = serialize(message[keys[i]]);
       }
       return [ 'map', id, keys, values ];
     }
   }
@@ skipping 132 matching lines @@
     var result = null;
     var listener = function (e) {
       result = JSON.parse(e.data);
     };
     window.addEventListener(source, listener, false);
     dispatchEvent(target, [source, serialized]);
     window.removeEventListener(source, listener, false);
     return deserialize(result);
   }
 })();