fix zero capacity constraint bug
fix zero capacity constraint bug

jlittell/cycamore,gonuke/cycamore,jlittell/cycamore,Baaaaam/cyBaM,Baaaaam/cycamore,Baaaaam/cyBaM,rwcarlsen/cycamore,jlittell/cycamore,gonuke/cycamore,Baaaaam/cyCLASS,Baaaaam/cyBaM,Baaaaam/cycamore,rwcarlsen/cycamore,gonuke/cycamore,rwcarlsen/cycamore,Baaaaam/cyCLASS,gonuke/cycamore,jlittell/cycamore,Baaaaam/cyBaM,Baaaaam/cycamore,rwcarlsen/cycamore