* kbx/keybox-search.c (blob_get_keyid): New.
(keybox-search): Call skipfnc callback function.
--
This patch (tentatively) fixes
GnuPG-bug-id: 1794
The keybox_search function in kbx/keybox-search.c currently ignores
the skipfnc callback, but the validate_key_list function in
g10/trustdb.c uses such a callback to exclude ultimately trusted keys.