From 1d845aab1c05d2be1825f9f94f3e339c8daf2065 Mon Sep 17 00:00:00 2001
From: Thalia <thalia.e.chan@googlemail.com>
Date: Mon, 8 Oct 2018 13:34:35 +0100
Subject: [PATCH] Don't add body attribute to an extension node with an empty
 body

Map nodes with an empty body don't have a body property on their
'mw' attribute; so don't add one when checking if the node has
been modified.

Bug: T206473
Change-Id: I24fb8d5f012c417996c8d420fa25af9d13528d18
---
 modules/ve-mw/ui/ve.ui.MWExtensionWindow.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/ve-mw/ui/ve.ui.MWExtensionWindow.js b/modules/ve-mw/ui/ve.ui.MWExtensionWindow.js
index 8ac5278cf8..0fa5d37289 100644
--- a/modules/ve-mw/ui/ve.ui.MWExtensionWindow.js
+++ b/modules/ve-mw/ui/ve.ui.MWExtensionWindow.js
@@ -240,7 +240,7 @@ ve.ui.MWExtensionWindow.prototype.removeNode = function () {
 };
 
 /**
- * Update mwData object with the new values from the inspector
+ * Update mwData object with the new values from the inspector or dialog
  *
  * @param {Object} mwData MediaWiki data object
  */
@@ -254,7 +254,7 @@ ve.ui.MWExtensionWindow.prototype.updateMwData = function ( mwData ) {
 	value = value.replace( new RegExp( '<(/' + tagName + '\\s*>)', 'gi' ), '&lt;$1' );
 
 	if ( value.trim() === '' && this.constructor.static.selfCloseEmptyBody ) {
-		mwData.body = null;
+		delete mwData.body;
 	} else {
 		mwData.body = mwData.body || {};
 		mwData.body.extsrc = value;