From c7f8921cea91693039a1cb5e1cbc81d965a39866 Mon Sep 17 00:00:00 2001
From: Chris Forbes <chrisf@ijw.co.nz>
Date: Thu, 26 Aug 2010 21:22:23 +1200
Subject: [PATCH] fix crash in Missile.Tick when the target is killed while the
 missile is enroute

---
 OpenRA.Mods.RA/Effects/Missile.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OpenRA.Mods.RA/Effects/Missile.cs b/OpenRA.Mods.RA/Effects/Missile.cs
index fdd849b08e..6f5775a7b5 100755
--- a/OpenRA.Mods.RA/Effects/Missile.cs
+++ b/OpenRA.Mods.RA/Effects/Missile.cs
@@ -76,7 +76,7 @@ namespace OpenRA.Mods.RA.Effects
 			var targetPosition = Args.target.CenterLocation + offset;
 
 			var targetAltitude = 0;
-			if (Args.target.IsActor && Args.target.Actor.HasTrait<IMove>())
+			if (Args.target.IsValid && Args.target.IsActor && Args.target.Actor.HasTrait<IMove>())
 				targetAltitude =  Args.target.Actor.Trait<IMove>().Altitude;
 			Altitude += Math.Sign(targetAltitude - Altitude);