From e4077672e15809d04df4fd2af3df998dfed04292 Mon Sep 17 00:00:00 2001
From: Morris Jobke <hey@morrisjobke.de>
Date: Sat, 17 Feb 2018 15:36:16 +0100
Subject: [PATCH] Use empty array as group list in OC_App::enable

Signed-off-by: Morris Jobke <hey@morrisjobke.de>
---
 lib/private/legacy/app.php  | 6 +++---
 settings/ajax/enableapp.php | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/private/legacy/app.php b/lib/private/legacy/app.php
index 6ce18bc791..61f639953e 100644
--- a/lib/private/legacy/app.php
+++ b/lib/private/legacy/app.php
@@ -390,8 +390,8 @@ class OC_App {
 	 *
 	 * This function set an app as enabled in appconfig.
 	 */
-	public function enable($appId,
-						   $groups = null) {
+	public function enable(string $appId,
+						   array $groups = []) {
 		self::$enabledAppsCache = []; // flush
 
 		// Check if app is already downloaded
@@ -405,7 +405,7 @@ class OC_App {
 		$installer->installApp($appId);
 
 		$appManager = \OC::$server->getAppManager();
-		if (!is_null($groups)) {
+		if ($groups !== []) {
 			$groupManager = \OC::$server->getGroupManager();
 			$groupsList = [];
 			foreach ($groups as $group) {
diff --git a/settings/ajax/enableapp.php b/settings/ajax/enableapp.php
index 4014664481..edcccf9b0b 100644
--- a/settings/ajax/enableapp.php
+++ b/settings/ajax/enableapp.php
@@ -34,7 +34,7 @@ if ($lastConfirm < (time() - 30 * 60 + 15)) { // allow 15 seconds delay
 	exit();
 }
 
-$groups = isset($_POST['groups']) ? (array)$_POST['groups'] : null;
+$groups = isset($_POST['groups']) ? (array)$_POST['groups'] : [];
 $appIds = isset($_POST['appIds']) ? (array)$_POST['appIds'] : [];
 
 try {