From 026c90ccff6f40cdc370c11339cdfab4a5e6b7b9 Mon Sep 17 00:00:00 2001
From: Stephen Blott
Date: Sat, 18 Nov 2017 12:17:09 +0000
Subject: Make clear that element need not be provided here.

---
 content_scripts/scroller.coffee | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'content_scripts')

diff --git a/content_scripts/scroller.coffee b/content_scripts/scroller.coffee
index e2e05722..f65062e4 100644
--- a/content_scripts/scroller.coffee
+++ b/content_scripts/scroller.coffee
@@ -95,7 +95,7 @@ findScrollableElement = (element, direction, amount, factor) ->
 # On some pages, the scrolling element is not actually scrollable.  Here, we search the document for the
 # largest visible element which does scroll vertically. This is used to initialize activatedElement. See
 # #1358.
-firstScrollableElement = (element) ->
+firstScrollableElement = (element = null) ->
   unless element
     scrollingElement = getScrollingElement()
     if doesScroll(scrollingElement, "y", 1, 1) or doesScroll(scrollingElement, "y", -1, 1)
-- 
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