cipher: Fix rsa key generation.
* cipher/rsa.c (generate_fips): Set the least significant bit.
Cherry-picked master commit of:
51754fa2ed06cc41487324432dbea654642ef244
- GnuPG-bug-id: T5919
- Fixes-commit: 5f9b3c2e220ca6d0eaff32324a973ef67933a844
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>