Fixed the zig-zag bug.
Fixed the zig-zag bug.

foosel/CuraEngine,Intrinsically-Sublime/CuraEngine,fxtentacle/CuraEngine,mspark93/CuraEngine,totalretribution/CuraEngine,Jwis921/PersonalCuraEngine,electrocbd/CuraEngine,markwal/CuraEngine,patrick3coffee/CuraTinyG,markwal/CuraEngine,robotustra/curax,Intrinsically-Sublime/CuraEngine,ROBO3D/CuraEngine,alex1818/CuraEngine,Skeen/CuraJS-Engine,mspark93/CuraEngine,foosel/CuraEngine,derekhe/CuraEngine,be3d/CuraEngine,uus169/CuraEngine,jacobdai/CuraEngine-1,markwal/CuraEngine,fxtentacle/CuraEngine,alephobjects/CuraEngine,patrick3coffee/CuraTinyG,phonyphonecall/CuraEngine,Intrinsically-Sublime/CuraEngine,derekhe/CuraEngine,patrick3coffee/CuraTinyG,totalretribution/CuraEngine,jacobdai/CuraEngine-1,Jwis921/PersonalCuraEngine,robotustra/curax,totalretribution/CuraEngine,jacobdai/CuraEngine-1,fxtentacle/CuraEngine,alephobjects/CuraEngine,pratikshashroff/pcura,alephobjects/CuraEngine,alex1818/CuraEngine,phonyphonecall/CuraEngine,ROBO3D/CuraEngine,phonyphonecall/CuraEngine,be3d/CuraEngine,Ultimaker/CuraEngine,pratikshashroff/pcura,Skeen/CuraJS-Engine,alex1818/CuraEngine,uus169/CuraEngine,foosel/CuraEngine,daid/CuraCutEngine,daid/CuraCutEngine,uus169/CuraEngine,electrocbd/CuraEngine,pratikshashroff/pcura,electrocbd/CuraEngine,robotustra/curax,Ultimaker/CuraEngine,mspark93/CuraEngine,Jwis921/PersonalCuraEngine,be3d/CuraEngine,Skeen/CuraJS-Engine,derekhe/CuraEngine,ROBO3D/CuraEngine