Fixed segault after finishing calculation
Fixed segault after finishing calculation

Bug introduced in 796d043c0df84fd0cb470c0bda9bacd2d39f9d14
Apparently I was still sleeping or something...

FauxFaux/ncdu,piyo/ncdu,ppetr/ncdu,guns/ncdu,gitkaste/ncdu,guns/ncdu,gitkaste/ncdu,rofl0r/ncdu,guns/ncdu,sunny256/ncdu,rofl0r/ncdu,FauxFaux/ncdu,sunny256/ncdu,ppetr/ncdu,ppetr/ncdu