client: add missing dendl and s/dout/ldout/

Introduced in ce4436c9d4206ff4a4af7fdc16e571dcc77cd8b4

Signed-off-by: Loic Dachary <loic-201408@dachary.org>
Merge pull request #2686 from dachary/wip-client-dout

client: add missing dendl and s/dout/ldout/

Reviewed-by: John Spray <john.spray@redhat.com>