Bug 1764886 - Update pdf.js to version 2.14.171 r=pdfjs-reviewers,marco

Differential Revision: https://phabricator.services.mozilla.com/D143819

toolkit/components/pdfjs/content/build/pdf.scripting.js

@@ -29,7 +29,7 @@
 		exports["pdfjs-dist/build/pdf.scripting"] = factory();
 	else
 		root.pdfjsScripting = factory();
-})(this, function() {
+})(this, () => {
 return /******/ (() => { // webpackBootstrap
 /******/ 	"use strict";
 /******/ 	var __webpack_modules__ = ([
@@ -641,7 +641,12 @@ class Field extends _pdf_object.PDFObject {
     if (this._isChoice) {
       if (this.multipleSelection) {
         const values = new Set(value);
-        this._currentValueIndices.length = 0;
+
+        if (Array.isArray(this._currentValueIndices)) {
+          this._currentValueIndices.length = 0;
+        } else {
+          this._currentValueIndices = [];
+        }
 
         this._items.forEach(({
           displayValue
@@ -2614,6 +2619,10 @@ class EventDispatcher {
   mergeChange(event) {
     let value = event.value;
 
+    if (Array.isArray(value)) {
+      return value;
+    }
+
     if (typeof value !== "string") {
       value = value.toString();
     }
@@ -4947,8 +4956,8 @@ Object.defineProperty(exports, "initSandbox", ({
 
 var _initialization = __w_pdfjs_require__(1);
 
-const pdfjsVersion = '2.14.102';
-const pdfjsBuild = 'db4f3adc5';
+const pdfjsVersion = '2.14.171';
+const pdfjsBuild = '3f5c31e20';
 })();
 
 /******/ 	return __webpack_exports__;