Clear 'Saved' message when clicking Save button in user preferences.

Tiny thing, but... clicking Save for a user's preferences shows the text _Saved!_ next to the _Save Changes_ button. Press the button again, and if the action takes a little but of time, it still shows the _Saved!_ text next to it. This just clears it when starting to save. I've written too much already explaining it than what it took to change. Thanks.