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.
if (node[$extra]) {
    return false;
  }
  node[$extra] = Object.create(null);
  if (node.targetType === "auto") {
    return false;
  }
  const root = node[$getTemplateRoot]();
  let target = null;
  if (node.target) {
    target = root[$searchNode](node.target, node[$getParent]());
    if (!target) {
      return false;
    }
    target = target[0];
  }
  const { currentPageArea, currentContentArea } = root[$extra];
  if (node.targetType === "pageArea") {
    if (!(target instanceof PageArea)) {
      target = null;
    }
    if (node.startNew) {
      node[$extra].target = target || currentPageArea;
      return true;
    } else if (target && target !== currentPageArea) {