From c97fd7d97a380e00c8b11c190b44a37e1e1a2702 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sun, 3 May 2020 21:42:35 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/WebHeaderCollection.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index c2680e6b..65b92ca2 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -1138,8 +1138,11 @@ namespace WebSocketSharp.Net
       if (header == null)
         throw new ArgumentNullException ("header");
 
-      if (header.Length == 0)
-        throw new ArgumentException ("An empty string.", "header");
+      if (header.Length == 0) {
+        var msg = "An empty string.";
+
+        throw new ArgumentException (msg, "header");
+      }
 
       var idx = header.IndexOf (':');