`unwrap_or_revert_with` should accept module as argument

[Maciej Zieliński]

At the moment the way to panic when unwrapping is:

unwrap_or_revert_with(&self.env(), Overflow)

This creates a copy on env, which most of the time is not used.

Instead it could accept Module trait and get env only when needed.

unwrap_or_revert_with(&self, Overflow)