card: Fix showing KDF object attribute.
* g10/call-agent.c (learn_status_cb): Parse the KDF DO. * g10/card-util.c (current_card_status): Show it correctly.
Backport master commit of:
98f4eff7ffde106ae4f60739d1104282430ac14f
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>