From a1981804e36eef599fd0ca2816a4d3154e1311b6 Mon Sep 17 00:00:00 2001
From: Flamefire <alex@grundis.de>
Date: Mon, 1 Dec 2014 21:42:40 +0100
Subject: [PATCH] Fix crash on category change

---
 Vocaluxe/Base/CSongs.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Vocaluxe/Base/CSongs.cs b/Vocaluxe/Base/CSongs.cs
index e0495076..3216d620 100644
--- a/Vocaluxe/Base/CSongs.cs
+++ b/Vocaluxe/Base/CSongs.cs
@@ -92,7 +92,8 @@ namespace Vocaluxe.Base
                 if (value == -1 || _IsCatIndexValid(value))
                 {
                     _CatIndex = value;
-                    OnCategoryChanged();
+                    if (OnCategoryChanged != null)
+                        OnCategoryChanged();
                 }
             }
         }