Extra script tag when page_level_ads enabled

When page level advertisement is enabled script tag is embedded inside script tag like this-

<script><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<script>
  (adsbygoogle = window.adsbygoogle || []).push({
    google_ad_client: "ca-pub-XXXXXXXXXXXXXXXX",
    enable_page_level_ads: true
  });
</script></script>