check to see if cli is null before posting a message to it
check to see if cli is null before posting a message to it

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