fix siac update response
fix siac update response

ericflo/Sia,ChrisSchinnerl/Sia,mtlynch/Sia,MrStrong/Sia,mharkus/Sia,MrStrong/Sia,mnsl/Sia,rivine/rivine,rivine/rivine,ericflo/Sia,mnsl/Sia,ChrisSchinnerl/Sia,NebulousLabs/Sia,NebulousLabs/Sia,mtlynch/Sia,mharkus/Sia