From a1cdab106c89a6f451b960cc18148cc06a6c5220 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sat, 5 Oct 2019 21:13:14 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Ext.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/websocket-sharp/Ext.cs b/websocket-sharp/Ext.cs
index 88bcf5fa..abe3f58e 100644
--- a/websocket-sharp/Ext.cs
+++ b/websocket-sharp/Ext.cs
@@ -2180,11 +2180,12 @@ namespace WebSocketSharp
         separator = String.Empty;
 
       var buff = new StringBuilder (64);
+      var end = len - 1;
 
-      for (var i = 0; i < len - 1; i++)
+      for (var i = 0; i < end; i++)
         buff.AppendFormat ("{0}{1}", array[i], separator);
 
-      buff.Append (array[len - 1].ToString ());
+      buff.Append (array[end].ToString ());
       return buff.ToString ();
     }