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)
````
this.closePath();
      this.fillStroke();
    }
    closeEOFillStroke() {
      this.closePath();
      this.eoFillStroke();
    }
    paintSolidColorImageMask() {
      const rect = this.svgFactory.createElement("svg:rect");
      rect.setAttributeNS(null, "x", "0");
      rect.setAttributeNS(null, "y", "0");
      rect.setAttributeNS(null, "width", "1px");
      rect.setAttributeNS(null, "height", "1px");
      rect.setAttributeNS(null, "fill", this.current.fillColor);
      this._ensureTransformGroup().appendChild(rect);
    }
    paintImageXObject(objId) {
      const imgData = objId.startsWith("g_")
        ? this.commonObjs.get(objId)
        : this.objs.get(objId);
      if (!imgData) {
        warn(`Dependent image with object ID ${objId} is not ready yet`);
        return;
      }
      this.paintInlineImageXObject(imgData);
    }
    paintInlineImageXObject(imgData, mask) {