Adding Documents Twice?

I noticed this code in the apachesolar.module file:

        // Chunk the adds by 20s
        $docs_chunk = array_chunk($documents, 20);
        foreach ($docs_chunk as $docs) {
          $solr->addDocuments($docs);
        }
        $solr->addDocuments($documents);

I think this adds all the documents twice as $documents does not get truncated after a call to array_chunk. At least, when I add a call to count the items in $documents it has the same number it did before. The description here (http://us.php.net/array_chunk) makes it seem like the last element should have up to the chunk size for arrays that have remainders.