Merge pull request #581 from teloxide/dialogue-must-use

Mark `Dialogue::{new, chat_id}` as `#[must_use]`

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  - `UpdateListener::StopToken` is now always `Send` [**BC**].
  - Rename `BotCommand` trait to `BotCommands` [**BC**].
  - `BotCommands::descriptions` now returns `CommandDescriptions` instead of `String` [**BC**].
+ - Mark `Dialogue::new` as `#[must_use]`.
 
 ## 0.7.2 - 2022-03-23
 

src/dispatching/dialogue/mod.rs

@@ -120,11 +120,13 @@ where
 {
     /// Constructs a new dialogue with `storage` (where dialogues are stored)
     /// and `chat_id` of a current dialogue.
+    #[must_use]
     pub fn new(storage: Arc<S>, chat_id: i64) -> Self {
         Self { storage, chat_id, _phantom: PhantomData }
     }
 
     /// Returns a chat ID associated with this dialogue.
+    #[must_use]
     pub fn chat_id(&self) -> i64 {
         self.chat_id
     }