From 87e729ad9db66631958d4f2017da17c7dafb3f63 Mon Sep 17 00:00:00 2001
From: Simon Lydell <simon.lydell@gmail.com>
Date: Sat, 30 Apr 2016 10:40:55 +0200
Subject: [PATCH] Fix Find mode crash

---
 extension/lib/viewport.coffee | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/extension/lib/viewport.coffee b/extension/lib/viewport.coffee
index bbcb861..94d6f7c 100644
--- a/extension/lib/viewport.coffee
+++ b/extension/lib/viewport.coffee
@@ -68,8 +68,8 @@ getAllRangesInsideViewport = (window, viewport, offset = {left: 0, top: 0}) ->
       rect = range.getBoundingClientRect()
       if (rect.top >= headerBottom - MINIMUM_EDGE_DISTANCE and
           rect.bottom <= footerTop + MINIMUM_EDGE_DISTANCE) or
-         header.contains(range.commonAncestorContainer) or
-         footer.contains(range.commonAncestorContainer)
+         header?.contains(range.commonAncestorContainer) or
+         footer?.contains(range.commonAncestorContainer)
         adjustedRect = {
           left: offset.left + rect.left
           top: offset.top + rect.top
-- 
2.39.3