Doplnění chybějícího parametru

Souvisí s https://github.com/composer/composer/commit/de3188ca7d8a6cfad6171b0aba1b81ed8a654289

Jinak produkuje chybu:

```
  [ErrorException]
  Argument 2 passed to Composer\Autoload\AutoloadGenerator::parseAutoloads()
  must implement interface Composer\Package\PackageInterface, none given, cal
  led in vendor/nette/addon-installer/src/Nette/Addons/Installer.php on line 208 and
  defined
```