Improve chain database creation error handling
Improve chain database creation error handling

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