message: Fix clippy::redundant_closure
diff: @@ -61,7 +61,7 @@ impl Arbitrary for BigUint {
  #[allow(bare_trait_objects)] // `dyn` needs Rust 1.27 to parse, even when cfg-disabled
  fn shrink(&self) -> Box<Iterator<Item = Self>> {
  // Use shrinker from Vec
  - Box::new(self.data.shrink().map(|x| BigUint::new(x)))
  + Box::new(self.data.shrink().map(BigUint::new))
  }
  }
  