check if a battery is available, so the electric WHR is connected to the...

check if a battery is available, so the electric WHR is connected to the battery before checking whether the batery is full

VectoCore/VectoCore/Models/SimulationComponent/Impl/CombustionEngine.cs

@@ -495,7 +495,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 			var (pWHRelMap, pWHRelCorr) =  GetWHRPower(ModelData.ElectricalWHR, engineSpeed, engineTorque);
 			var (pWHRmechMap, pWHRmechCorr) = GetWHRPower(ModelData.MechanicalWHR, engineSpeed, engineTorque);
 
-			if (Math.Abs(DataBus.BatteryInfo.StateOfCharge - DataBus.BatteryInfo.MaxSoC) < 0.01) {
+			if (DataBus.BatteryInfo != null && Math.Abs(DataBus.BatteryInfo.StateOfCharge - DataBus.BatteryInfo.MaxSoC) < 0.01) {
 				// we are close to the max charge - 'bypass' electric WHR...
 				pWHRelCorr = 0.SI<Watt>();
 			}