Do not fail parentNode is unmounted

[okonet]

If the container node got unmounted when the check

https://github.com/okonet/react-simple-focus-within/blob/853d04494ec4ee28140f3c53fd580d9b8de0d7f6/src/FocusWithin.js#L132

will lead to a TypeError Cannot read property 'contains' of null

[okonet]

🎉 This issue has been resolved in version 1.1.2 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀