bugfix: gcode flavor prepended for UM2 was incorrect
bugfix: gcode flavor prepended for UM2 was incorrect

totalretribution/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine,totalretribution/CuraEngine,markwal/CuraEngine,markwal/CuraEngine,pratikshashroff/pcura,Ultimaker/CuraEngine,pratikshashroff/pcura,ROBO3D/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,markwal/CuraEngine,totalretribution/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,pratikshashroff/pcura