Well, I can fix it, but not without some code reuse.

To do this without the reuse these lines in `scrub_attributes` would have to be their own methods and accept a node.
https://github.com/flavorjones/loofah/blob/master/lib/loofah/html5/scrub.rb#L45-L51

Then this fix could be the one line above in the `scrub_attributes` method in this file.