I accidentally clicked use gems to revive when I died on first floor of a dungeon. There was no confirmation box like the one you get when you press no. Why would I want to spend $13 worth of gems to revive on a dungeon that I have been in for 2 minutes.

Luckily, I pressed alt-F4 and my gems seem to be back now, but it would be nice to have something in place if you click by mistake.