Deduplicate code for ECB encryption and decryption
* cipher/cipher.c (do_ecb_crypt): New, based on old 'do_ecb_encrypt'. (do_ecb_encrypt): Use 'do_ecb_crypt', pass encryption function. (do_ecb_decrypt): Use 'do_ecb_crypt', pass decryption function.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>