fixed old hl typo

h3d/impl/DirectXDriver.hx

@@ -1092,7 +1092,7 @@ class DirectXDriver extends h3d.impl.Driver {
 		IncrSat,
 		Incr,
 		DecrSat,
-		Decr,
+		#if (hldx < "1.7.0") Desc #else Decr #end,
 		Invert,
 	];