Properly initialise Polygons
Properly initialise Polygons

The polygons vector of the Polygons class was in some cases not initialised while the size of the vector was requested, causing Valgrind to report a conditional jump depending on uninitialised memory.

Contributes to issue CURA-349.
alephobjects/CuraEngine,alephobjects/CuraEngine,markwal/CuraEngine,pratikshashroff/pcura,Ultimaker/CuraEngine,pratikshashroff/pcura,ROBO3D/CuraEngine,markwal/CuraEngine,totalretribution/CuraEngine,ROBO3D/CuraEngine,totalretribution/CuraEngine,markwal/CuraEngine,totalretribution/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,pratikshashroff/pcura