From b35658b1ff90d66a1f8e7ad392fcaa71d5f847e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Bertolini?= <bertolini.cedric@me.com>
Date: Mon, 13 Jun 2016 10:55:07 +0200
Subject: [PATCH] Fix feature detection for IE

operator `!` has higher precedence (4) than operator `in` (8). Parentheses are mandatory here.
---
 .../Resources/views/Profiler/base_js.html.twig                  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
index 23e05030c5..a1b9c4ffd9 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
@@ -209,7 +209,7 @@
         var addEventListener;
 
         var el = document.createElement('div');
-        if (!'addEventListener' in el) {
+        if (!('addEventListener' in el)) {
             addEventListener = function (element, eventName, callback) {
                 element.attachEvent('on' + eventName, callback);
             };