From 40d5046440e20e3ec82ec6b1625f1d3cdce351a1 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sun, 7 Jan 2018 16:36:03 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/HttpListenerRequest.cs | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/websocket-sharp/Net/HttpListenerRequest.cs b/websocket-sharp/Net/HttpListenerRequest.cs
index 37926ee3..59b0b090 100644
--- a/websocket-sharp/Net/HttpListenerRequest.cs
+++ b/websocket-sharp/Net/HttpListenerRequest.cs
@@ -235,10 +235,16 @@ namespace WebSocketSharp.Net
     /// </value>
     public Stream InputStream {
       get {
-        return _inputStream ??
-               (_inputStream = HasEntityBody
-                               ? _context.Connection.GetRequestStream (_contentLength, _chunked)
-                               : Stream.Null);
+        if (!HasEntityBody)
+          return Stream.Null;
+
+        if (_inputStream == null) {
+          _inputStream = _context.Connection.GetRequestStream (
+                           _contentLength, _chunked
+                         );
+        }
+
+        return _inputStream;
       }
     }