[Modify] Polish it

websocket-sharp/Ext.cs

@@ -331,12 +331,14 @@ namespace WebSocketSharp
       Stream destination,
       int bufferLength,
       Action completed,
-      Action<Exception> error)
+      Action<Exception> error
+    )
     {
       var buff = new byte[bufferLength];
 
       AsyncCallback callback = null;
-      callback = ar => {
+      callback =
+        ar => {
           try {
             var nread = source.EndRead (ar);
             if (nread <= 0) {