Steps to reproduce (this PDF):
[page4.pdf](https://github.com/mozilla/pdf.js/files/5990272/page4.pdf)

````
npm install
node_modules/.bin/gulp dist-install
node examples/node/pdf2svg.js /tmp/page4.pdf
````

Error:
````
Error: Invalid SVG dimensions
    at unreachable (/tmp/pdf.js/build/dist/legacy/build/pdf.js:2086:9)
    at assert (/tmp/pdf.js/build/dist/legacy/build/pdf.js:2091:5)
    at DOMSVGFactory.create (/tmp/pdf.js/build/dist/legacy/build/pdf.js:640:24)
    at SVGGraphics._makeTilingPattern (/tmp/pdf.js/build/dist/legacy/build/pdf.js:24178:36)
    at SVGGraphics._makeColorN_Pattern (/tmp/pdf.js/build/dist/legacy/build/pdf.js:24127:23)
    at SVGGraphics.setFillColorN (/tmp/pdf.js/build/dist/legacy/build/pdf.js:24088:39)
    at SVGGraphics.executeOpTree (/tmp/pdf.js/build/dist/legacy/build/pdf.js:23634:22)
    at /tmp/pdf.js/build/dist/legacy/build/pdf.js:23508:18
    at process._tickCallback (internal/process/next_tick.js:68:7)
    at Function.Module.runMain (internal/modules/cjs/loader.js:834:11)
````
const current = this.current;
      let dashArray = current.dashArray;
      if (lineWidthScale !== 1 && dashArray.length > 0) {
        dashArray = dashArray.map(function (value) {
          return lineWidthScale * value;
        });
      }
      element.setAttributeNS(null, "stroke", current.strokeColor);
      element.setAttributeNS(null, "stroke-opacity", current.strokeAlpha);
      element.setAttributeNS(null, "stroke-miterlimit", pf(current.miterLimit));
      element.setAttributeNS(null, "stroke-linecap", current.lineCap);
      element.setAttributeNS(null, "stroke-linejoin", current.lineJoin);
      element.setAttributeNS(
        null,
        "stroke-width",
        pf(lineWidthScale * current.lineWidth) + "px"
      );
      element.setAttributeNS(
        null,
        "stroke-dasharray",
        dashArray.map(pf).join(" ")
      );
      element.setAttributeNS(
        null,
        "stroke-dashoffset",
        pf(lineWidthScale * current.dashPhase) + "px"
      );
    }
    eoFill() {