The following code is flagged as dead (since it's *replacing* rather than updating the existing Object):
https://github.com/mozilla/pdf.js/blob/4483cba72410027acf46630ebf252ae529704476/src/core/xfa/template.js#L2336-L2339
according to the alert in https://github.com/mozilla/pdf.js/security/code-scanning/103?query=ref%3Arefs%2Fheads%2Fmaster

Looking at the surrounding code, I can see a couple of possibilities here:
 1. This is indeed just dead code, which should be removed.
 2. The code should be moved up, and placed just *above* the previous block instead.
 3. There should be other, more invasive, changes made to this code...

/cc @calixteman Which solution is correct here?
Assuming it's either option 1 or 2, I can submit a patch to fix this.
this.dataColumnCount = getInteger({
      data: attributes.dataColumnCount,
      defaultValue: -1,
      validate: x => x >= 0,
    });
    this.dataLength = getInteger({
      data: attributes.dataLength,
      defaultValue: -1,
      validate: x => x >= 0,
    });
    this.dataPrep = getStringOption(attributes.dataPrep, [
      "none",
      "flateCompress",
    ]);
    this.dataRowCount = getInteger({
      data: attributes.dataRowCount,
      defaultValue: -1,
      validate: x => x >= 0,
    });
    this.endChar = attributes.endChar || "";
    this.errorCorrectionLevel = getInteger({
      data: attributes.errorCorrectionLevel,
      defaultValue: -1,
      validate: x => x >= 0 && x <= 8,
    });
    this.id = attributes.id || "";
    this.moduleHeight = getMeasurement(attributes.moduleHeight, "5mm");
    this.moduleWidth = getMeasurement(attributes.moduleWidth, "0.25mm");
    this.printCheckDigit = getInteger({
      data: attributes.printCheckDigit,