kbx: Unify blob reading functions.
* kbx/keybox-file.c (_keybox_read_blob): Remove. (_keybox_read_blob2): Rename to .... (_keybox_read_blob): this. Make arg options. Change all callers. * kbx/keybox-search.c (keybox_search): Factor fopen call out to ... (open_file): new. (keybox_seek): Als use open_file.
- Signed-off-by: Werner Koch <wk@gnupg.org>