From e63fab4a7ea44512ef95ef64ed0c55f76548a672 Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Wed, 17 Oct 2018 19:28:22 +0200
Subject: [PATCH] Fix searching language category in language file via GUI

See #2545
---
 .../package/plugin/LanguagePackageInstallationPlugin.class.php  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/system/package/plugin/LanguagePackageInstallationPlugin.class.php b/wcfsetup/install/files/lib/system/package/plugin/LanguagePackageInstallationPlugin.class.php
index 21552c0d35..7f6c809ac5 100644
--- a/wcfsetup/install/files/lib/system/package/plugin/LanguagePackageInstallationPlugin.class.php
+++ b/wcfsetup/install/files/lib/system/package/plugin/LanguagePackageInstallationPlugin.class.php
@@ -772,7 +772,7 @@ XML;
 		
 		/** @var \DOMElement $languageCategory */
 		foreach ($document->documentElement->childNodes as $languageCategory) {
-			if ($languageCategory->getAttribute('name') === $languageCategoryName) {
+			if ($languageCategory instanceof \DOMElement && $languageCategory->getAttribute('name') === $languageCategoryName) {
 				$languageCategory->appendChild($languageItem);
 				break;
 			}
-- 
2.20.1