Merge torrust#450: Fix clippy linting error torrust#449

1d5c8c0 refactor: [torrust#449] fix clippy linting error (Mario)

Pull request description:

  Fixes torrust#449.

ACKs for top commit:
  josecelano:
    ACK 1d5c8c0

Tree-SHA512: e0b8c40d4afddaa60dd562cfddc96f8d808f17d4b6c657c7c243e31594de7c61fb9fdc9cc760526e98c4a68f3201840e327be6203121ea799cdb8e7d8c8696bf

tests/e2e/environment.rs

@@ -82,7 +82,7 @@ impl TestEnv {
     /// Returns the server starting settings if the servers was already started.
     /// We do not know the settings until we start the server.
     pub fn server_settings(&self) -> Option<Settings> {
-        self.starting_settings.as_ref().cloned()
+        self.starting_settings.clone()
     }
 
     /// Provides the API server socket address.