message: Simplify codepoints function
  Summary: No need to make the intermediate binding
diff: @@ -257,8 +257,7 @@ pub(crate) fn string_methods(builder: &mut GlobalsBuilder) {
  fn codepoints(this: &str) -> Vec<i32> {
  // Note that we return a list here... Which is not equivalent to the go
  // implementation.
  - let v: Vec<i32> = this.chars().map(|x| u32::from(x) as i32).collect();
  - Ok(v)
  + Ok(this.chars().map(|x| u32::from(x) as i32).collect())
  }
  /// [string.count](
  