bugfix: no infill visualization
bugfix: no infill visualization

alex1818/CuraEngine,pratikshashroff/pcura,ROBO3D/CuraEngine,alephobjects/CuraEngine,markwal/CuraEngine,patrick3coffee/CuraTinyG,markwal/CuraEngine,alephobjects/CuraEngine,fxtentacle/CuraEngine,pratikshashroff/pcura,ROBO3D/CuraEngine,alephobjects/CuraEngine,alex1818/CuraEngine,mspark93/CuraEngine,totalretribution/CuraEngine,markwal/CuraEngine,alex1818/CuraEngine,fxtentacle/CuraEngine,pratikshashroff/pcura,patrick3coffee/CuraTinyG,totalretribution/CuraEngine,Ultimaker/CuraEngine,mspark93/CuraEngine,patrick3coffee/CuraTinyG,mspark93/CuraEngine,totalretribution/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,fxtentacle/CuraEngine