Dead or missing code?

In lime-tileLayer.lua there is either some dead code or some missing code at line 683 in the Beta and line 801 in v.3.4:

if(tile.sprite) then  
  
else  
 -- If no sprite was created then chances are this was a blank section, delete the tile to save some memory (maybe). If problems start appearing simply comment out the next lines.  
 --tile:destroy()  
 --tile = nil  
end   

And another one at line 657 in the Beta and line 667 in v.3.4:

[code]
function TileLayer:update( event )

end
[/code] [import]uid: 129287 topic_id: 25564 reply_id: 325564[/import]