message: Resolve a redundant_closure lint warning
diff: @@ -38,7 +38,7 @@ fn test_lev_distance() {
  use std::char::{from_u32, MAX};
  // Test bytelength agnosticity
  for c in (0u32..MAX as u32)
  - .filter_map(|i| from_u32(i))
  + .filter_map(from_u32)
  .map(|i| i.to_string())
  {
  assert_eq!(lev_distance(&c, &c), 0);
  