From 12df1dcdfd077a0ade29cb0f188a17c5095539ea Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Tue, 9 Sep 2014 01:04:27 +0400
Subject: [PATCH] (GetScheme): fixed potential bug when looking up unknown
 encryption scheme.

---
 ArcFormats/ArcXP3.cs | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/ArcFormats/ArcXP3.cs b/ArcFormats/ArcXP3.cs
index 1220ce77..f636470e 100644
--- a/ArcFormats/ArcXP3.cs
+++ b/ArcFormats/ArcXP3.cs
@@ -290,11 +290,9 @@ NextEntry:
 
         public static ICrypt GetScheme (string scheme)
         {
-            ICrypt algorithm = NoCryptAlgorithm;
-            if (!string.IsNullOrEmpty (scheme))
-            {
-                KnownSchemes.TryGetValue (scheme, out algorithm);
-            }
+            ICrypt algorithm;
+            if (string.IsNullOrEmpty (scheme) || !KnownSchemes.TryGetValue (scheme, out algorithm))
+                algorithm = NoCryptAlgorithm;
             return algorithm;
         }