From aed4e74bb9a77537ffc41ea701b6752ee840874b Mon Sep 17 00:00:00 2001
From: weber-software <weber@weber-software.com>
Date: Wed, 12 Aug 2015 16:38:21 +0200
Subject: [PATCH] fix memory leak inside ColumnReorder extension

destroy the _columnDndSources before assigning a new empty array
---
 extensions/ColumnReorder.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/extensions/ColumnReorder.js b/extensions/ColumnReorder.js
index 6f76e8cf1..bfe0c8092 100644
--- a/extensions/ColumnReorder.js
+++ b/extensions/ColumnReorder.js
@@ -169,6 +169,12 @@ define([
 
 			// After header is rendered, set up a dnd source on each of its subrows.
 
+			if (this._columnDndSources) {
+				// Destroy old dnd sources.
+				arrayUtil.forEach(this._columnDndSources, function (source) {
+					source.destroy();
+				});
+			}
 			this._columnDndSources = [];
 
 			if (this.columnSets) {