From 191381f7da0b283fb471dc193c8cad009738be4f Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 12 Nov 2015 11:58:52 +0530
Subject: [PATCH] Prevent mem-leak in buttons

Event handler should not have a reference to the DOM node in its context
---
 src/pyj/widgets.pyj | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pyj/widgets.pyj b/src/pyj/widgets.pyj
index fd5bb9e93f..c6f2e59ef8 100644
--- a/src/pyj/widgets.pyj
+++ b/src/pyj/widgets.pyj
@@ -13,7 +13,7 @@ def create_button(text, icon=None, action=None, tooltip=None):
         text = '\xa0' + text
     ans = E.button(E.i(class_=cls), text, class_='calibre-push-button', type='button', title=tooltip or '')
     if action is not None:
-        ans.addEventListener('click', def(event): event.preventDefault(), action(event, ans);)
+        ans.addEventListener('click', def(event): event.preventDefault(), action(event);)
     return ans
 
 create_button.style = build_rule('button.calibre-push-button',