context2d - Fix hollow paths being drawn as filled
context2d - Fix hollow paths being drawn as filled

The groundwork was already there in the context2d plugin to not set the fill until the final path instruction (rather than at path close), but just wasn't being used.
MrRio/jsPDF,yWorks/jsPDF,MrRio/jsPDF,yWorks/jsPDF,MrRio/jsPDF,yWorks/jsPDF