ParallaxOutsideDelegate Error with a ListView that is in full view

[Torrunt]

I get an "Rect argument contained a NaN value" error when using Parallax.outside on a ListView that happens to be in full-view. It's an easy fix, just add && maxScrollExtent != 0 to this if statement:

https://github.com/letsar/flutter_parallax/blob/1918bff8028ad89d9ee66b66338b57bab8a5bfac/lib/src/rendering/parallax.dart#L298