P: Wish for a "cancel" button on "Back Up Catalog" box

If I had only one wish for the next Lightroom update, it would be a cancel button on the last dialog when you close a catalog. I like the reminder to back up each time, but sometimes I click quit too soon or by accident. It would be great if the "Back Up Catalog" dialog included "cancel" next to "Skip this time" and "back up." Thanks.