refactor: Use Try operator over Into::into, fixup comment.

crates/matrix-sdk-crypto/src/store/traits.rs

@@ -357,7 +357,7 @@ pub trait CryptoStore: AsyncTraitDeps {
     ) -> Result<Option<StoredRoomKeyBundleData>, Self::Error>;
 
     /// Get whether we have previously downloaded all room keys for a particular
-    /// from the key backup in advance of building a room key bundle.
+    /// room from the key backup in advance of building a room key bundle.
     async fn has_downloaded_all_room_keys(&self, room_id: &RoomId) -> Result<bool, Self::Error>;
 
     /// Get arbitrary data from the store

crates/matrix-sdk-sqlite/src/crypto_store.rs

@@ -825,13 +825,13 @@ trait SqliteObjectCryptoStoreExt: SqliteAsyncConnExt {
     }
 
     async fn has_downloaded_all_room_keys(&self, room_id: Key) -> Result<bool> {
-        self.query_row(
-            "SELECT EXISTS (SELECT 1 FROM room_key_backups_fully_downloaded WHERE room_id = ?)",
-            (room_id,),
-            |row| row.get(0),
-        )
-        .await
-        .map_err(Into::into)
+        Ok(self
+            .query_row(
+                "SELECT EXISTS (SELECT 1 FROM room_key_backups_fully_downloaded WHERE room_id = ?)",
+                (room_id,),
+                |row| row.get(0),
+            )
+            .await?)
     }
 }