chore: Make Clippy happy.

crates/matrix-sdk-indexeddb/src/stream.rs

@@ -72,7 +72,7 @@ pin_project! {
         // When asking for the next cursor, the [`IdbCursorWithValue::continue_cursor`]
         // method has to be called. It's an async method. Thus, in the `Stream`
         // implementation of `Self`, this future must be stored to be polled manually.
-        continue_cursor_future: Option<Pin<Box<dyn Future<Output = Result<bool, DomException>> + 'a>>>,
+        continue_cursor_future: Option<ContinueCursorFuture<'a>>,
 
         // The cursor API is designed in a way that the first item is already fetched
         // when the cursor is created. Because `Stream::poll_next` is designed the other
@@ -82,6 +82,9 @@ pin_project! {
     }
 }
 
+/// Just a type alias to a “complex type”.
+type ContinueCursorFuture<'a> = Pin<Box<dyn Future<Output = Result<bool, DomException>> + 'a>>;
+
 impl<'a> StreamByCursor<'a> {
     /// Build a new `StreamByCursor`.
     ///
@@ -144,10 +147,7 @@ impl<'a> Stream for StreamByCursor<'a> {
             // `continue_cursor_future` can be dropped.
             *this.continue_cursor_future = None;
 
-            Poll::Ready(Some(Ok((
-                cursor.key().unwrap_or_else(|| JsValue::UNDEFINED),
-                cursor.value(),
-            ))))
+            Poll::Ready(Some(Ok((cursor.key().unwrap_or(JsValue::UNDEFINED), cursor.value()))))
         } else {
             // It doesn't have a new value. End of the cursor. End of the stream.
             Poll::Ready(None)
@@ -387,7 +387,7 @@ where
 
                 // Get a new `cursor_future`.
                 let object_store_ref = unsafe { this.latest_object_store_ptr.as_ref() };
-                let after_latest_key = IdbKeyRange::lower_bound_with_open(&this.latest_key, true)?;
+                let after_latest_key = IdbKeyRange::lower_bound_with_open(this.latest_key, true)?;
                 let cursor_future =
                     object_store_ref.as_ref().unwrap().open_cursor_with_range(&after_latest_key)?;