common: New put_membuf_cb to replace static membuf_data_cb.
* common/membuf.c (put_membuf_cb): New. * agent/call-scd.c (membuf_data_cb): Remove. Change callers to use put_membuf_cb. * common/get-passphrase.c (membuf_data_cb): Ditto. * g10/call-agent.c (membuf_data_cb): Ditto. * sm/call-agent.c (membuf_data_cb): Ditto.
- Signed-off-by: Werner Koch <wk@gnupg.org>