Use mouse wheel to access search history

I would like to have the mousewheel find earlier search terms when the search window is open. 

For example, I hit Ctrl-F, and the find window opens.  Currently, I can use the up and down arrows to select earlier search terms.  It would be a lot nicer if I could also use the mouse wheel.

I think this would be a very easy change, and would make searching a lot nicer.