Use modern error macros and fix a missing assignment.
* src/ocsp.c: Remove errno.h. Replace gpg_error_from_errno(errno) by gpg_error_from_syserror (). (parse_response): Ditto. Return direct becuase static analyzer may not grasp that gpg_error_from_syserror will never return false. (ksba_ocsp_get_responder_id): Actually return an error for NO_DATA.
- Signed-off-by: Werner Koch <wk@gnupg.org>