Fix crash in client::reschedule_delegate_loop()
Fix crash in client::reschedule_delegate_loop()

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