From a31f1af37672216aa01f451ad20749d732cb40b6 Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Wed, 17 Oct 2018 19:01:48 +0200
Subject: [PATCH] Fix saving new media providers without `html` via GUI

See #2545
---
 .../plugin/MediaProviderPackageInstallationPlugin.class.php   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wcfsetup/install/files/lib/system/package/plugin/MediaProviderPackageInstallationPlugin.class.php b/wcfsetup/install/files/lib/system/package/plugin/MediaProviderPackageInstallationPlugin.class.php
index 77bea3bbc1..46ee6dbf1c 100644
--- a/wcfsetup/install/files/lib/system/package/plugin/MediaProviderPackageInstallationPlugin.class.php
+++ b/wcfsetup/install/files/lib/system/package/plugin/MediaProviderPackageInstallationPlugin.class.php
@@ -193,6 +193,10 @@ class MediaProviderPackageInstallationPlugin extends AbstractXMLPackageInstallat
 		if ($html !== null) {
 			$data['html'] = $html->nodeValue;
 		}
+		else if ($saveData) {
+			// when saving data, `html` has to be present
+			$data['html'] = '';
+		}
 		
 		$className = $element->getElementsByTagName('className')->item(0);
 		if ($className !== null) {
-- 
2.20.1