std.c: Support optional addr and host arguments in getnameinfo

The POSIX spec allows passing null here
https://pubs.opengroup.org/onlinepubs/9799919799/functions/getnameinfo.html
18ffd48b60Karol Kosek committed on 2/9/2025, 3:06:38 PMparent933ba93
1 file changedLine totals unavailable