You got off lightly...
I'd hate to see your blood pressure if they gave you a yellow sticker...
It comes with the territory of being on your provisional license, the cops will nit-pick you for anything they can... it's suppose to scare P-Platers straight, I'm not saying your a bad motorist, but that was their way of making sure you know not to test the law.
I speak from experience, I haven't been pulled over the last 2 years I've had my full license, but I still shit my pants when I see the police, hahaha