Fix damaged-building artwork and don't show healthbar for dead units (cnc critical-building state)

OpenRA.Mods.RA/AutoHeal.cs

@@ -60,7 +60,7 @@ namespace OpenRA.Mods.RA
 			return inRange
 				.Where(a => a != self && self.Owner.Stances[ a.Owner ] == Stance.Ally)
 				.Where(a => Combat.HasAnyValidWeapons(self, Target.FromActor(a)))
-				.Where(a => a.traits.Contains<Health>() && a.GetExtendedDamageState() != ExtendedDamageState.Undamaged)
+				.Where(a => a.traits.Contains<Health>() && a.GetExtendedDamageState() < ExtendedDamageState.Undamaged)
 				.OrderBy(a => (a.Location - self.Location).LengthSquared)
 				.FirstOrDefault();
 		}