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.handler = new XFAObjectArray();
    this.hyphenation = new XFAObjectArray();
    this.image = new XFAObjectArray();
    this.imageEdit = new XFAObjectArray();
    this.integer = new XFAObjectArray();
    this.issuers = new XFAObjectArray();
    this.items = new XFAObjectArray();
    this.keep = new XFAObjectArray();
    this.keyUsage = new XFAObjectArray();
    this.line = new XFAObjectArray();
    this.linear = new XFAObjectArray();
    this.lockDocument = new XFAObjectArray();
    this.manifest = new XFAObjectArray();
    this.margin = new XFAObjectArray();
    this.mdp = new XFAObjectArray();
    this.medium = new XFAObjectArray();
    this.message = new XFAObjectArray();
    this.numericEdit = new XFAObjectArray();
    this.occur = new XFAObjectArray();
    this.oid = new XFAObjectArray();
    this.oids = new XFAObjectArray();
    this.overflow = new XFAObjectArray();
    this.pageArea = new XFAObjectArray();
    this.pageSet = new XFAObjectArray();
    this.para = new XFAObjectArray();
    this.passwordEdit = new XFAObjectArray();
    this.pattern = new XFAObjectArray();
    this.picture = new XFAObjectArray();
    this.radial = new XFAObjectArray();
    this.reason = new XFAObjectArray();