Fix ArgumentNullException from System.Collections.Generic.Dictionary`…

…2.TryGetValue as reported at http://forum.botengine.de/t/argumentnullexception-in-trygetvaluenullable/481
botengine-de · Nov 7, 2017 · 06002c5 · 06002c5
1 parent d2cd8ca
commit 06002c5
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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() =>