gpg: Prepare for signatures with ISSUER_FPR but without ISSUER.
* g10/getkey.c (get_pubkey_for_sig): New. (get_pubkeyblock_for_sig): New. * g10/mainproc.c (issuer_fpr_raw): Give global scope. (check_sig_and_print): Use get_pubkeyblock_for_sig. * g10/pkclist.c (check_signatures_trust): Use get_pubkey_for_sig. * g10/sig-check.c (check_signature2): Ditto. (check_signature_over_key_or_uid): Ditto.
The whole getkey stuff is still a mess with way to much duplication
and missing caching of already fetched data.
(cherry picked from commit f7526c7bc754acf68bde0b79c785e875a9365d60)
- GnuPG-bug-id: T4046
- Signed-off-by: Werner Koch <wk@gnupg.org>