adding fix for edge case
adding fix for edge case

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