Fix updating with apps

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/App/AppManager.php

@@ -195,7 +195,7 @@ class AppManager implements IAppManager {
 		if ($values[$appId] === 'yes' || $values[$appId] === 'no') {
 			return [];
 		}
-		return json_decode($values[$appId]);
+		return json_decode($values[$appId], true);
 	}
 
 

lib/private/Updater.php

@@ -418,7 +418,7 @@ class Updater extends BasicEmitter {
 
 				if (!empty($previousEnableStates)) {
 					$ocApp = new \OC_App();
-					if (!empty($previousEnableStates[$app])) {
+					if (!empty($previousEnableStates[$app]) && is_array($previousEnableStates[$app])) {
 						$ocApp->enable($app, $previousEnableStates[$app]);
 					} else {
 						$ocApp->enable($app);