Undefined Function snapshot_recursive_rmdir()

This is mostly an FYI and bug fix post. While doing an uninstall of Snapshot I received the following error:
Fatal error: Call to undefined function snapshot_recursive_rmdir() in /<path info removed>/wp-content/plugins/snapshot/lib/snapshot_utilities.php on line 781

Line 781 reads
changing it to
allows the uninstall to work without error.