Merge pull request #2590 from paymand/contexts_fix

Don't send the JSON response as Error in getJSONFromUrl().

lib/devices/ios/webkit-remote-debugger.js

@@ -98,7 +98,7 @@ WebKitRemoteDebugger.prototype.getJSONFromUrl = function (host, port, path, cb)
       jsonResponse += chunk;
     });
     response.on('end', function () {
-      cb(JSON.parse(jsonResponse));
+      cb(null, JSON.parse(jsonResponse));
     });
   }).on('error', cb);
 };