If not exists the directory of the file socket_path, the socket creation failed

[Gytamon]

If the path (/var/run/nscd/) does not exist then socket creation die, perhaps pre-create the directory will be an idea into the main.c

[ericonr]

We currently do that in the service scripts for musl-nscd, but I'm not entirely opposed to doing it in the program itself. It would make it necessary to manipulate some paths, though.

Are you interested in making a PR?