From 0dd6a089f6dfb7859114425c60c967ea57e5306f Mon Sep 17 00:00:00 2001
From: yup <yup@email.su>
Date: Sun, 17 Mar 2024 15:41:22 +0000
Subject: [PATCH] Minor performance improvement by elimination of an
 unnecessary intermediate array

---
 toolkit/content/widgets/tree.xml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/toolkit/content/widgets/tree.xml b/toolkit/content/widgets/tree.xml
index 1fc7577289..d177c8ccf7 100644
--- a/toolkit/content/widgets/tree.xml
+++ b/toolkit/content/widgets/tree.xml
@@ -789,6 +789,7 @@
         ]]>
       </handler>
 #endif // XP_MACOSX
+
       <handler event="keydown" keycode="VK_ESCAPE">
         <![CDATA[
           if (this._editingColumn) {
@@ -1534,10 +1535,10 @@
                   popupChild.setAttribute("disabled", "true");
                 columns[currElement.getAttribute("ordinal")] = popupChild;
               });
-              columns.filter(function () { return true; })
-                     .forEach(function (e, i) {
+              columns.filter(function (e, i) {
                         e.setAttribute("colindex", i);
                         aPopup.insertBefore(e, refChild);
+                        return false;
                       });
             }