pg_getaddrinfo_all() with hintp=NULL

Hi!

I'm trying to use pg_getaddrinfo_all() with NULL hints, but got segfault.

According to man(3) getaddrinfo, hints may be passed as NULL. In this case af_family

is equivalent to AF_UNSPEC. I'm adding a patch to pg_getaddrinfo_all() to make it available by passing hintp as NULL.

p, li { white-space: pre-wrap; }

-- 
With best regards,
Sergey Tatarintsev, 
PostgresPro