Undefined variable $loader

I ran into an issue, because depending on the environment I load different fixtures, even sometimes non at all. If `getFixtures()` returns an empty array the `Loader` fails with 

    PHP Warning:  Uncaught exception 'Symfony\Component\Debug\Exception\ContextErrorException' 
    with message 'Notice: Undefined variable: loader 
    in .../vendor/hautelook/alice-bundle/Hautelook/AliceBundle/Alice/Loader.php line 96' 

While looking at the code it absolutely makes sense, because it looks like

    public function load(array $files)
    {
        $objects = array();
        foreach ($files as $file) {
            /** @var $loader \Nelmio\Alice\Loader\Base */
            $loader = $this->getLoader('yaml');
            $loader->setProviders($this->providers);

            $set = $loader->load($file);
            $this->persister->persist($set);

            $objects = array_merge($objects, $set);
        }

        foreach ($loader->getReferences() as $name => $obj) {
            $this->persister->detach($obj);
            $this->references->set($name, $obj);
        }
    }

If `$files` is empty, `$loader` is never set. But this makes me wonder about another thing here: The next foreach uses `$loader` again. That is the same `$loader`-variable, that is set in the previous `freach` over and over again, which means, that it only use the latest occurence. Wouldn't it make sense to move the two lines 

            /** @var $loader \Nelmio\Alice\Loader\Base */
            $loader = $this->getLoader('yaml');
            $loader->setProviders($this->providers);

out of the first `foreach`?