call getnameinfo() with NI_NUMERICHOST
call getnameinfo() with NI_NUMERICHOST

Otherwise it occasionally fails with EAI_AGAIN. Also, getnameinfo() is
called for the dynamically assigned IP address of the peer, so it is
unlikely that there is a hostname for it. Trying to look it up just slows
things down.

michaelolbrich/wds,01org/wds,alexshalamov/wysiwidi-2,michaelolbrich/wds,alexshalamov/wds,alexshalamov/wds,alexshalamov/wysiwidi-2,275288698/wds,275288698/wds,alexshalamov/wysiwidi-2,01org/wds,michaelolbrich/wds,alexshalamov/wds,275288698/wds,01org/wds