fix(session): Log when session_* calls are slow

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

cron.php

@@ -61,7 +61,7 @@ Options:
 	Server::get(ISession::class)->close();
 
 	// initialize a dummy memory session
-	$session = new \OC\Session\Memory('');
+	$session = new \OC\Session\Memory();
 	$cryptoWrapper = \OC::$server->getSessionCryptoWrapper();
 	$session = $cryptoWrapper->wrapSession($session);
 	\OC::$server->setSession($session);