Bug 1062702 - [MADAI][Performance] Displays homescreen even in case of direct camera start.

It's confused and irrelevant to the next line change. I think we should add:

"If it's not homescreen, wait the foreground app to paint itself. If it is, or there is no active app, unlock immediately to eliminate the 'performance' gap. Since to wait homescreen repaint would cost about 1 second, see Bug 1054904 comment#18"