fix empty first revision bug
fix empty first revision bug

rivine/rivine,ChrisSchinnerl/Sia,mtlynch/Sia,ChrisSchinnerl/Sia,mharkus/Sia,ericflo/Sia,mnsl/Sia,ericflo/Sia,MrStrong/Sia,mtlynch/Sia,mnsl/Sia,Mingling94/Sia,mharkus/Sia,NebulousLabs/Sia,johnathanhowell/Sia,rivine/rivine,NebulousLabs/Sia,MrStrong/Sia