ns_client_getnamebuf() cannot fail (i.e. return NULL) since commit
e31cc1eeb4. Remove redundant NULL checks
performed on the pointer returned by ns_client_getnamebuf().
ns_client_getnamebuf() cannot fail (i.e. return NULL) since commit
e31cc1eeb4. Remove redundant NULL checks
performed on the pointer returned by ns_client_getnamebuf().