fix: need to include unistd.h for getpid()

[alex-s168]

No description provided.

[flysand7]

wtf, getpid() isn't used in the parser. Lol?

[alex-s168]

wtf, getpid() isn't used in the parser. Lol?

it's used in some file included only by the parser. I don't remember which one

[flysand7]

Sorry for being somewhat rude. If it was a fix, then I have two comments on this:

1. If it's used somewhere else it's probably best to include it in that file instead.
2. unistd.h is a POSIX-specific header, so this won't compile on windows. Perhaps it would make sense to make this inclusion platform-specific as well, or isolate the part that uses getpid() so it works on both *nix and windows.

[alex-s168]

1. I would've done that, but the original file didn't have any includes itself either
2. I was under the impression that windows has unistd.h but it's just mostly useless, yes you're right

but also I can't find the getpid() call on master anymore (from github mobile), so it seems like NeGate removed it already

[Carlyle-Foster]

getpid() is used in the common/log.h but so is the necessary include. the use in cuikgo is indeed gone (sic, mixed up dev and master, i checked and the file in question is cuik_go/gc.c. as to why alex can't find it anymore, maybe they made the same mistake?)