gpg: Reformat parts of decrypt-data.c
* g10/decrypt-data.c (struct decode_filter_context_s): Rename 'defer' to 'holdback' and 'defer_filled' to 'holdbacklen'. Increase size of holdback to allow for future AEAD decryption. Turn 'partial' and 'eof_seen' into bit fields. (decrypt_data): Replace write_status_text by write_Status_printf. Indent parts of the code.
- Signed-off-by: Werner Koch <wk@gnupg.org>