message: Remove extra blank lines and commas on last match arm for consistency
diff: @@ -314,11 +314,9 @@ fn select_pkg<'a, T>(mut source: T,
  }
  config.shell().warn(&msg)?;
  Some(v.to_string())
  - },
  - },
  }
  -
  -
  + }
  + }
  }
  None => None,
  };
  