use Array.indexOf instead of Lambda.indexOf (#321)

hxd/fmt/fbx/HMDOut.hx

@@ -265,7 +265,7 @@ class HMDOut extends BaseLibrary {
 							break;
 						}
 				} else
-					isSkin = Lambda.indexOf(foundSkin, t) >= 0;
+					isSkin = foundSkin.indexOf(t) >= 0;
 				if( isSkin ) {
 					skins.push(t);
 				} else

hxd/inspect/ScenePanel.hx

@@ -38,7 +38,7 @@ private class SceneObject extends TreeNode {
 		var name = objectName(o);
 		if( o.parent == null )
 			return name;
-		var idx = Lambda.indexOf(@:privateAccess o.parent.children, o);
+		var idx = @:privateAccess o.parent.children.indexOf(o);
 		var count = 0;
 		for( i in 0...idx )
 			if( objectName(o.parent.getChildAt(i)) == name )

hxsl/Flatten.hx

@@ -373,7 +373,7 @@ class Flatten {
 			if( best != null ) {
 				var free = best.size - size;
 				if( free > 0 ) {
-					var i = Lambda.indexOf(alloc, best);
+					var i = alloc.indexOf(best);
 					var a = new Alloc(g, t, best.pos + size, free);
 					alloc.insert(i + 1, a);
 					best.size = size;