From 6809f254ebe3975f11299abb58fd22e4f79471d5 Mon Sep 17 00:00:00 2001
From: Yury Delendik <ydelendik@mozilla.com>
Date: Tue, 19 Mar 2013 08:36:12 -0500
Subject: [PATCH] Protection from empty/invalid root or kid in NameTree

---
 src/obj.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/obj.js b/src/obj.js
index d1a0f363f..993e9a2fa 100644
--- a/src/obj.js
+++ b/src/obj.js
@@ -797,6 +797,9 @@ var NameTree = (function NameTreeClosure() {
       while (queue.length > 0) {
         var i, n;
         var obj = xref.fetchIfRef(queue.shift());
+        if (!isDict(obj)) {
+          continue;
+        }
         if (obj.has('Kids')) {
           var kids = obj.get('Kids');
           for (i = 0, n = kids.length; i < n; i++) {