Berry did not indeed shot the ball.

That's why they didn't blow the whistle. It's not because it's against the Spurs or because the Lakers was playing. Even the Spurs themselves did not complaint. They know there is no way they can get that call. How many times do you see a game decided by a final free throw? You must find your way to make the clinch shot, not find your way to create a clinch fault call. That why clinch shots are so beautiful.