Fixing ctor calls and ctor itself to not break usage in calendar and contacts .....

apps/files/appinfo/remote.php

@@ -50,7 +50,7 @@ $server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend, $defaults->getName()
 // FIXME: The following line is a workaround for legacy components relying on being able to send a GET to /
 $server->addPlugin(new \OC\Connector\Sabre\DummyGetResponsePlugin());
 $server->addPlugin(new \OC\Connector\Sabre\FilesPlugin($objectTree));
-$server->addPlugin(new \OC\Connector\Sabre\MaintenancePlugin());
+$server->addPlugin(new \OC\Connector\Sabre\MaintenancePlugin(\OC::$server->getConfig()));
 $server->addPlugin(new \OC\Connector\Sabre\ExceptionLoggerPlugin('webdav', \OC::$server->getLogger()));
 
 // wait with registering these until auth is handled and the filesystem is setup

apps/files_sharing/publicwebdav.php

@@ -46,7 +46,7 @@ $server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend, $defaults->getName()
 // FIXME: The following line is a workaround for legacy components relying on being able to send a GET to /
 $server->addPlugin(new \OC\Connector\Sabre\DummyGetResponsePlugin());
 $server->addPlugin(new \OC\Connector\Sabre\FilesPlugin($objectTree));
-$server->addPlugin(new \OC\Connector\Sabre\MaintenancePlugin());
+$server->addPlugin(new \OC\Connector\Sabre\MaintenancePlugin(\OC::$server->getConfig()));
 $server->addPlugin(new \OC\Connector\Sabre\ExceptionLoggerPlugin('webdav', \OC::$server->getLogger()));
 
 // wait with registering these until auth is handled and the filesystem is setup

lib/private/connector/sabre/maintenanceplugin.php

@@ -45,7 +45,7 @@ class MaintenancePlugin extends ServerPlugin {
 	/**
 	 * @param IConfig $config
 	 */
-	public function __construct(IConfig $config) {
+	public function __construct(IConfig $config = null) {
 		$this->config = $config;
 		if (is_null($config)) {
 			$this->config = \OC::$server->getConfig();