From 2b43cf0660f08bae347d9e63221329aca0d7dfd2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0t=C4=9Bp=C3=A1n=20N=C4=9Bmec?= <stepnem@gmail.com>
Date: Wed, 27 Jul 2011 22:36:20 +0200
Subject: [PATCH] finder: Fix the case when there are no anonymous nodes in the
 document.

---
 common/modules/finder.jsm | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/common/modules/finder.jsm b/common/modules/finder.jsm
index ee8a6526..e2d24bb0 100644
--- a/common/modules/finder.jsm
+++ b/common/modules/finder.jsm
@@ -523,9 +523,12 @@ var RangeFind = Class("RangeFind", {
             }
             pushRange(pageStart, pageEnd);
 
-            for (let [, elem] in iter(doc.getAnonymousNodes(doc.documentElement))) {
-                let range = RangeFind.nodeContents(elem);
-                pushRange(RangeFind.endpoint(range, true), RangeFind.endpoint(range, false));
+            let anonNodes = doc.getAnonymousNodes(doc.documentElement);
+            if (anonNodes) {
+                for (let [, elem] in iter(anonNodes)) {
+                    let range = RangeFind.nodeContents(elem);
+                    pushRange(RangeFind.endpoint(range, true), RangeFind.endpoint(range, false));
+                }
             }
         }
         rec(win);