Commit 294ac32e "nfsd: protect clid and verifier generation with
client_lock" moved gen_confirm() to gen_clid().

After that commit, setclientid will return a bad reply with all-zero
verifier after copy_clid().
Signed-off-by: NKinglong Mee <kinglongmee@gmail.com>
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>