Fix checked mode failure

runtime/bin/socket_patch.dart

 // Copyright (c) 2013, 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.
 
 patch class RawServerSocket {
   /* patch */ static Future<RawServerSocket> bind(address,
                                                   int port,
                                                   {int backlog: 0,
                                                    bool v6Only: false}) {
     return _RawServerSocket.bind(address, port, backlog, v6Only);
@@ skipping 289 matching lines @@
   static Future<List<NetworkInterface>> listInterfaces({
       bool includeLoopback: false,
       bool includeLinkLocal: false,
       InternetAddressType type: InternetAddressType.ANY}) {
     return _IOService.dispatch(_SOCKET_LIST_INTERFACES, [type._value])
         .then((response) {
           if (isErrorResponse(response)) {
             throw createError(response, "Failed listing interfaces");
           } else {
             var map = response.skip(1)
-                .fold(new Map<String, List<InternetAddress>>(), (map, result) {
+                .fold(new Map<String, NetworkInterface>(), (map, result) {
                   var type = new InternetAddressType._from(result[0]);
                   var name = result[3];
                   var index = result[4];
                   var address = new _InternetAddress(
                       type, result[1], "", result[2]);
                   if (!includeLinkLocal && address.isLinkLocal) return map;
                   if (!includeLoopback && address.isLoopback) return map;
                   map.putIfAbsent(
                       name, () => new _NetworkInterface(name, index));
                   map[name].addresses.add(address);
@@ skipping 952 matching lines @@
     if (_detachReady != null) {
       _detachReady.complete(null);
     } else {
       if (_raw != null) {
         _raw.shutdown(SocketDirection.SEND);
         _disableWriteEvent();
       }
     }
   }
 }