Remove LINQ in some performance critical AutoTarget paths.

OpenRA.Game/GameRules/WeaponInfo.cs

@@ -132,10 +132,11 @@ namespace OpenRA.GameRules
 			if (!IsValidTarget(targetTypes))
 				return false;
 
-			if (!Warheads.Any(w => w.IsValidAgainst(victim, firedBy)))
-				return false;
+			foreach (var warhead in Warheads)
+				if (warhead.IsValidAgainst(victim, firedBy))
+					return true;
 
-			return true;
+			return false;
 		}
 
 		/// <summary>Checks if the weapon is valid against (can target) the frozen actor.</summary>

OpenRA.Game/Player.cs

@@ -159,13 +159,25 @@ namespace OpenRA
 
 		public bool CanTargetActor(Actor a)
 		{
-			if (HasFogVisibility && fogVisibilities.Any(f => f.IsVisible(a)))
-				return true;
+			if (HasFogVisibility)
+				foreach (var fogVisibility in fogVisibilities)
+					if (fogVisibility.IsVisible(a))
+						return true;
 
 			return CanViewActor(a);
 		}
 
-		public bool HasFogVisibility { get { return fogVisibilities.Any(f => f.HasFogVisibility()); } }
+		public bool HasFogVisibility
+		{
+			get
+			{
+				foreach (var fogVisibility in fogVisibilities)
+					if (fogVisibility.HasFogVisibility())
+						return true;
+
+				return false;
+			}
+		}
 
 		#region Scripting interface