how to free menus memory

and btw the lines 340-355 could be moved out of the function and precomputed earlier? that could break the reference to the uncompressed data.

Also are you aware that on line 339 you define new function for each cycle of the loop? so you get many duplicated function definitions, can you define function once earlier and just reuse it there (and just pass j into it as a parameter or whatever is needed)?