From cfeeb9c9baa0249893d372580feb6103d792bf12 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Fri, 7 Jun 2019 19:47:37 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Ext.cs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/websocket-sharp/Ext.cs b/websocket-sharp/Ext.cs
index 26e5ae6c..ef6d7bd6 100644
--- a/websocket-sharp/Ext.cs
+++ b/websocket-sharp/Ext.cs
@@ -1402,10 +1402,14 @@ namespace WebSocketSharp
     /// </param>
     public static bool IsEnclosedIn (this string value, char c)
     {
-      return value != null
-             && value.Length > 1
-             && value[0] == c
-             && value[value.Length - 1] == c;
+      if (value == null)
+        return false;
+
+      var len = value.Length;
+      if (len < 2)
+        return false;
+
+      return value[0] == c && value[len - 1] == c;
     }
 
     /// <summary>