Resolve #816: Crash when no ledger entries in wallet_scan_transaction
Resolve #816: Crash when no ledger entries in wallet_scan_transaction

bitshares/bitshares-0.x,RemitaBit/Remitabit,bitshares/devshares,frrp/bitshares,frrp/bitshares,camponez/bitshares,FollowMyVote/bitshares,camponez/bitshares,bitsuperlab/cpp-play,dacsunlimited/dac_play,bitshares/bitshares,bitsuperlab/cpp-play,FollowMyVote/bitshares,bitshares/bitshares-0.x,RemitaBit/Remitabit,jakeporter/Bitshares,FollowMyVote/bitshares,bitshares/bitshares-0.x,bitshares/devshares,bitsuperlab/cpp-play,camponez/bitshares,bitshares/devshares,Ziftr/bitshares,bitshares/bitshares,RemitaBit/Remitabit,bitshares/bitshares,jakeporter/Bitshares,Ziftr/bitshares,camponez/bitshares,FollowMyVote/bitshares,frrp/bitshares,bitshares/bitshares-0.x,Ziftr/bitshares,dacsunlimited/dac_play,frrp/bitshares,FollowMyVote/bitshares,bitshares/bitshares,dacsunlimited/dac_play,dacsunlimited/dac_play,bitsuperlab/cpp-play,jakeporter/Bitshares,dacsunlimited/dac_play,bitshares/bitshares,RemitaBit/Remitabit,bitsuperlab/cpp-play,camponez/bitshares,jakeporter/Bitshares,RemitaBit/Remitabit,bitsuperlab/cpp-play,frrp/bitshares,bitshares/devshares,dacsunlimited/dac_play,bitshares/bitshares-0.x,FollowMyVote/bitshares,bitshares/bitshares,jakeporter/Bitshares,Ziftr/bitshares,frrp/bitshares,bitshares/devshares,bitshares/devshares,RemitaBit/Remitabit,jakeporter/Bitshares,bitshares/bitshares-0.x,camponez/bitshares