Move up Undamaged check in DamageState

A mere int comparison is obviously cheaper than
a comparison between two multiplications,
so pulling this above the checks of other damage states
allows us to bail early for undamaged actors.

OpenRA.Mods.Common/Traits/Health.cs

@@ -88,6 +88,9 @@ namespace OpenRA.Mods.Common.Traits
 		{
 			get
 			{
+				if (hp == MaxHP)
+					return DamageState.Undamaged;
+
 				if (hp <= 0)
 					return DamageState.Dead;
 
@@ -100,9 +103,6 @@ namespace OpenRA.Mods.Common.Traits
 				if (hp * 100L < MaxHP * 75L)
 					return DamageState.Medium;
 
-				if (hp == MaxHP)
-					return DamageState.Undamaged;
-
 				return DamageState.Light;
 			}
 		}