From 06002c548f15d8006337dc221521a5b695eacc4a Mon Sep 17 00:00:00 2001
From: Viir <Viir@Viir.de>
Date: Tue, 7 Nov 2017 14:04:46 +0000
Subject: [PATCH] Fix ArgumentNullException from
 System.Collections.Generic.Dictionary`2.TryGetValue as reported at
 http://forum.botengine.de/t/argumentnullexception-in-trygetvaluenullable/481

---
 src/Sanderling.ABot/Bot/Bot.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Sanderling.ABot/Bot/Bot.cs b/src/Sanderling.ABot/Bot/Bot.cs
index ef335ba..d896517 100644
--- a/src/Sanderling.ABot/Bot/Bot.cs
+++ b/src/Sanderling.ABot/Bot/Bot.cs
@@ -46,6 +46,7 @@ public class Bot
 		}
 
 		public Int64? ToggleLastAgeStepCountFromModule(Accumulation.IShipUiModule module) =>
+			module == null ? null :
 			stepIndex - ToggleLastStepIndexFromModule?.TryGetValueNullable(module);
 
 		IEnumerable<IBotTask[]> StepOutputListTaskPath() =>