db_witness_schedule.cpp:  Fix off-by-one translating between DB-level slot_num and scheduler-level slot_num
db_witness_schedule.cpp:  Fix off-by-one translating between DB-level slot_num and scheduler-level slot_num

oxarbitrage/bitshares-core,bitsuperlab/cpp-play2,oxarbitrage/bitshares-core,oxarbitrage/bitshares-core,bigoc/openchain,bigoc/openchain,bigoc/openchain,pmconrad/graphene,bitshares/bitshares-2,bitshares/bitshares-2,bitsuperlab/cpp-play2,bitshares/bitshares-2,cryptonomex/graphene,abitmore/bitshares-2,peertracksinc/muse,pmconrad/graphene,bitshares/bitshares-2,abitmore/bitshares-2,cryptonomex/graphene,pmconrad/graphene,bitsuperlab/cpp-play2,peertracksinc/muse,peertracksinc/muse,oxarbitrage/bitshares-core,abitmore/bitshares-2,abitmore/bitshares-2,cryptonomex/graphene,pmconrad/graphene,bigoc/openchain,peertracksinc/muse