fix(svgcontext.js): Fixed a situation that could result in stroke-dasharray being undefined.
fix(svgcontext.js): Fixed a situation that could result in stroke-dasharray being undefined.

aaronmars/vexflow,Huji/vexflow,Silverwolf90/vexflow,Huji/vexflow,Tails/vexflow,Tails/vexflow,aaronmars/vexflow,Silverwolf90/vexflow,Tails/vexflow,Huji/vexflow,Silverwolf90/vexflow,aaronmars/vexflow