fix infinite loop when end date not specified
fix infinite loop when end date not specified

chenr6/earth,jaythaceo/earth,icedwater/earth,zenway33/earth,m-funky/earth,robinj/earth,gardart/earth,Colbey/earth,zenway33/earth,chenr6/earth,Colbey/earth,ianynchen/earth,robinj/earth,Burste/earth,fuchao2012/earth,gardart/earth,sobetn/earth,heatery/earth,kidaa/earth,Burste/earth,m-funky/earth,heatery/earth,emirhartato/earth,awdesch/earth,fuchao2012/earth,tuapuikia/earth,renzomacedo/Clima,sobetn/earth,bernardodiasc/earth,jaythaceo/earth,bernardodiasc/earth,tuapuikia/earth,cambecc/earth,renzomacedo/Clima,grahamrobbo/demojam14,cambecc/earth,fengxw/earth,icedwater/earth,ianynchen/earth,DougFirErickson/earth,Colbey/earth,awdesch/earth,emirhartato/earth,DougFirErickson/earth,fengxw/earth,kidaa/earth