message: [clippy] Make clippy happy
  Did not touch this at all but now clippy is yelling at me :O
  Closes:
  Approved by: mimoo
diff: @@ -267,7 +267,7 @@ impl LibraSwarm {
  /// assumably due to previous launch failure, it will be removed.
  /// The directory for the last failed attempt won't be removed.
  fn setup_config_dir(config_dir: &Option<String>) -> LibraSwarmDir {
  - let dir = match config_dir {
  + match config_dir {
  Some(dir_str) => {
  let path_buf = PathBuf::from_str(&dir_str).expect("unable to create config dir");
  if path_buf.exists() {
  @@ -283,8 +283,7 @@ impl LibraSwarm {
  .expect("unable to create temporary config dir");
  LibraSwarmDir::Temporary(temp_dir)
  }
  - };
  - dir
  + }
  }
  pub fn configure_swarm(
  