fix: account for overlap areas ending in a pointy end (CURA-1911)
fix: account for overlap areas ending in a pointy end (CURA-1911)

totalretribution/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,totalretribution/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,totalretribution/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine