nss_files build failure with GCC 17

[Joseph Myers]

As it turns out, there's another such issue in 
hesiod/nss_hesiod/hesiod-service.c which means the build is still broken:

 INT_FIELD (result->s_port, ISSC_OR_SPACE, 10, 0, htons);

-- 
Joseph S. Myers
josmyers@redhat.com