Attach (recommended) or Link to PDF file here:
PDF from #4106, https://mail.gnome.org/archives/evince-list/2013-November/pdfNC0hkVW67a.pdf.

Steps to reproduce the problem:
1. Open the PDF

What is the expected behavior?
![immagine](https://user-images.githubusercontent.com/1616846/121865567-67ca4200-ccfe-11eb-8673-1d6e863fc8d5.png)

What went wrong?
The PDF doesn't load, `TypeError: can't access property Symbol(), match is null` error is logged in the console.
const style = toStyle(this, "hAlign");
    if (this.marginLeft !== "") {
      style.marginLeft = measureToString(this.marginLeft);
    }
    if (this.marginRight !== "") {
      style.marginRight = measureToString(this.marginRight);
    }
    if (this.spaceAbove !== "") {
      style.marginTop = measureToString(this.spaceAbove);
    }
    if (this.spaceBelow !== "") {
      style.marginBottom = measureToString(this.spaceBelow);
    }
    if (this.textIndent !== "") {
      style.textIndent = measureToString(this.textIndent);
      fixTextIndent(style);
    }
    if (this.lineHeight > 0) {
      style.lineHeight = measureToString(this.lineHeight);
    }