GoF Movie: Neville and the Gillyweed

[davewitley]

Steve wrote:

> Which I took to mean that Neville either gathered the Gillyweed from
> some other source like Prof. Sprout, or it came from the students
> communal potions stores. Gillyweed, from the perspective of the 
books,
> seems unlikely to be in the students communal stores, but this is the
> movie and they need quick and easy explanations. So, Snape seems to
> imply that he is unconcerned about the Gillyweed.

I kind of assumed Moody stole it and gave it to Neville.  Does 
repeated viewing uncover information to contradict that explanation?  
I have only seen it once and don't expect to again until it comes out 
on DVD.

David