From d24dc162dbe6ac41a3fd4004cc5f324e8e449ef4 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Thu, 23 May 2019 19:52:48 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/Cookie.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/websocket-sharp/Net/Cookie.cs b/websocket-sharp/Net/Cookie.cs
index bf5a79c1..ab38cb46 100644
--- a/websocket-sharp/Net/Cookie.cs
+++ b/websocket-sharp/Net/Cookie.cs
@@ -883,7 +883,7 @@ namespace WebSocketSharp.Net
           buff.AppendFormat ("; $Domain={0}", _domain);
       }
 
-      if (!_port.IsNullOrEmpty ()) {
+      if (_port != null) {
         if (_port != "\"\"")
           buff.AppendFormat ("; $Port={0}", _port);
         else