From 93ab4dcae40fa695b6d091fc00c65dff74b31ba3 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 7 Dec 2015 15:20:12 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/NetworkCredential.cs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/websocket-sharp/Net/NetworkCredential.cs b/websocket-sharp/Net/NetworkCredential.cs
index d2d392ce..397ac094 100644
--- a/websocket-sharp/Net/NetworkCredential.cs
+++ b/websocket-sharp/Net/NetworkCredential.cs
@@ -64,7 +64,7 @@ namespace WebSocketSharp.Net
     /// <paramref name="username"/> is empty.
     /// </exception>
     public NetworkCredential (string username, string password)
-      : this (username, password, null, new string[0])
+      : this (username, password, null, null)
     {
     }
 
@@ -151,11 +151,11 @@ namespace WebSocketSharp.Net
     /// </summary>
     /// <value>
     /// An array of <see cref="string"/> that contains the role names to which
-    /// the user associated with the credentials belongs.
+    /// the user associated with the credentials belongs if any.
     /// </value>
     public string[] Roles {
       get {
-        return _roles;
+        return _roles ?? (_roles = new string[0]);
       }
 
       internal set {