Refactor

Core/RenderManager.cs

@@ -332,7 +332,7 @@ namespace ADOFAIRenderer.Core
             var targetMethod = typeof(scnEditor).GetMethod("TryApplicationQuit",
                 System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
 
-            if (targetMethod == null || scnEditor.instance == null) return;
+            if (targetMethod == null || !scnEditor.instance) return;
             if (ADOBase.levelPath.IsNullOrEmpty())
             {
                 scnEditor.instance.TryQuitToMenu();