Usability Bug: "Yes" on cancel submit, does in fact submit

When I close the "Subversion Submit" window in QtCreator (== i want to cancel the submit process). I get asked "Do you want to commit the change?" which is very unintuitive by itself. But to make things worse, the "Yes" button is active. That means when i hit Enter by accident - i.e. because I didn't read the question and thought I'd be asked "Do you really want to cancel the commit process?" or something like that - all of my changes get commited possibly without any commit message.

I propose to change the default active button to cancel at least. I think it'd be better not be able to commit on closing the submit window. It should be only possible on pressing the commit button.