a small conversation with this guy to show him some small interest in his life. You could be a light to him and help him feel a small amount of care.

You could change the conversation away from what your home address is if you feel like sharing that would be dangerous for you.

You could change the subject and try to get him talking about some other topic.

Most of us do not know this guy and so would just be randomly guessing as to whether this is a big risk or not to give him your address.