locksrv/rollback: Cleanups
locksrv/rollback: Cleanups

- Don't calculate $reason if !$verbose, since we won't use the result in
that case

- Remove unused variable declarations

- Minor rearrangements

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr