What should be done if someone dies before being circumcised?

If he died, there is no need for circumcision because the intent behind circumcision is removing what gathers impurities. That is what is intended foremost by circumcision, that after he relieves himself from urination, he is able to wash the area and nothing remains (of impurity) in the foreskin that covers the head of the penis. So if he died, then there is no need. Although, it is better for people to circumcise their children in their early youth, since it is indeed gentler upon them, easier, faster for development, and lesser in movement. And Allah knows best.