Fixed bug in bridge generation.
Fixed bug in bridge generation.

It was calculating the angle to use for infill but then not using it.
This makes it use the calculated angle.  This makes the bridge
generation go from basically completely non-functional to just mostly
non-functional.

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