MFC r299502:

MFC r299502:
r299502 (by cem):

nss/gethostby_test: fix broken vector iteration of gethostbyaddr h_aliases

h_aliases is a NULL-terminated rather than fixed-length array.  nitems() is not
a valid way to determine its end; instead, check for NULL.

CID:		1346578

git-svn-id: svn://svn.freebsd.org/base/stable/10@301798 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f