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.
"qrcode",
        "rfid",
        "rss14",
        "rss14expanded",
        "rss14limited",
        "rss14stacked",
        "rss14stackedomni",
        "rss14truncated",
        "telepen",
        "ucc128",
        "ucc128random",
        "ucc128sscc",
        "upca",
        "upcaadd2",
        "upcaadd5",
        "upcapwcd",
        "upce",
        "upceadd2",
        "upceadd5",
        "upcean2",
        "upcean5",
        "upsmaxicode",
      ]
    );
    this.upsMode = getStringOption(attributes.upsMode, [
      "usCarrier",
      "internationalCarrier",
      "secureSymbol",
      "standardSymbol",
    ]);