[Modify] Polish it

websocket-sharp/Net/HttpListenerContext.cs

@@ -191,30 +191,34 @@ namespace WebSocketSharp.Net
     internal bool Authenticate ()
     {
       var schm = _listener.SelectAuthenticationScheme (_request);
+
       if (schm == AuthenticationSchemes.Anonymous)
         return true;
 
       if (schm == AuthenticationSchemes.None) {
         _response.Close (HttpStatusCode.Forbidden);
+
         return false;
       }
 
       var realm = _listener.GetRealm ();
-      var user =
+      var user = HttpUtility.CreateUser (
-        HttpUtility.CreateUser (
+                   _request.Headers["Authorization"],
-          _request.Headers["Authorization"],
+                   schm,
-          schm,
+                   realm,
-          realm,
+                   _request.HttpMethod,
-          _request.HttpMethod,
+                   _listener.GetUserCredentialsFinder ()
-          _listener.GetUserCredentialsFinder ()
+                 );
-        );
 
       if (user == null || !user.Identity.IsAuthenticated) {
-        _response.CloseWithAuthChallenge (new AuthenticationChallenge (schm, realm).ToString ());
+        var chal = new AuthenticationChallenge (schm, realm).ToString ();
+        _response.CloseWithAuthChallenge (chal);
+
         return false;
       }
 
       _user = user;
+
       return true;
     }