dirmngr: Use the new DNS wrapper for the HKP engine.
* dirmngr/ks-engine-hkp.c (my_getnameinfo): Change arg type to dns_addrinfo_t. (map_host): Replace getaddrinfo by resolve_dns_name.
Note that we still need to replace getnameinfo so that the PTR lookup
is either suppressed or also done via ADNS.
- Signed-off-by: Werner Koch <wk@gnupg.org>