Ctrl+C when running `occ preview:repair` crashes the process with an error from doctrine

[nickvergessen]

Error: Invalid callback OC\Core\Command\Preview\Repair::sigIntHandler, cannot access protected method OC\Core\Command\Preview\Repair::sigIntHandler() in …/3rdparty/doctrine/dbal/src/Driver/PDO/Statement.php:130
Stack trace:
#0 …/3rdparty/doctrine/dbal/src/Connection.php(1099): Doctrine\DBAL\Driver\PDO\Statement->execute()
#1 …/lib/private/DB/Connection.php(415): Doctrine\DBAL\Connection->executeQuery()
#2 …/lib/private/DB/ConnectionAdapter.php(50): OC\DB\Connection->executeQuery()
#3 …/lib/private/DB/QueryBuilder/QueryBuilder.php(289): OC\DB\ConnectionAdapter->executeQuery()
#4 …/lib/private/DB/QueryBuilder/ExtendedQueryBuilder.php(285): OC\DB\QueryBuilder\QueryBuilder->executeQuery()
#5 …/lib/private/DB/QueryBuilder/ExtendedQueryBuilder.php(53): OC\DB\QueryBuilder\ExtendedQueryBuilder->executeQuery()
#6 …/lib/private/Files/Cache/Cache.php(130): OC\DB\QueryBuilder\ExtendedQueryBuilder->execute()
#7 …/lib/private/Files/View.php(1301): OC\Files\Cache\Cache->get()
#8 …/lib/private/Files/View.php(1348): OC\Files\View->getCacheEntry()
#9 …/lib/private/Files/Node/Root.php(183): OC\Files\View->getFileInfo()
#10 …/lib/private/Files/Node/LazyFolder.php(141): OC\Files\Node\Root->get()
#11 …/core/Command/Preview/Repair.php(215): OC\Files\Node\LazyFolder->get()
#12 …/3rdparty/symfony/console/Command/Command.php(298): OC\Core\Command\Preview\Repair->execute()
#13 …/3rdparty/symfony/console/Application.php(1040): Symfony\Component\Console\Command\Command->run()
#14 …/3rdparty/symfony/console/Application.php(301): Symfony\Component\Console\Application->doRunCommand()
#15 …/3rdparty/symfony/console/Application.php(171): Symfony\Component\Console\Application->doRun()
#16 …/lib/private/Console/Application.php(183): Symfony\Component\Console\Application->run()
#17 …/console.php(87): OC\Console\Application->run()
#18 …/occ(11): require_once('...')