Look at the average credits for the average film. They go on forever, and there are tons of people in them. It's not like crediting somebody is a big deal, in terms of the cost of giving it out. There are plenty of people whose contribution to the film was small, just like the author of this code, but they get credited anyway, and that's just as it should be - the credit is for the contribution, not for the extent to which it makes the film a success.