mpi: Fix for 64-bit for _gcry_mpih_cmp_ui.
* mpi/mpih-const-time.c (_gcry_mpih_cmp_ui): Compare 64-bit value correctly.
Cherry-picked master commit:
a611e3a25d61505698e2bb38ec2db38bc6a74820
- Reported-by: Guido Vranken <guidovranken@gmail.com>
- GnuPG-bug-id: T5970
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>