Apply cargo fmt (#1146)

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

subxt/src/backend/legacy/mod.rs

@@ -114,7 +114,7 @@ impl<T: Config + Send + Sync + 'static> Backend<T> for LegacyBackend<T> {
 
     async fn block_body(&self, at: T::Hash) -> Result<Option<Vec<Vec<u8>>>, Error> {
         let Some(details) = self.methods.chain_get_block(Some(at)).await? else {
-            return Ok(None)
+            return Ok(None);
         };
         Ok(Some(
             details.block.extrinsics.into_iter().map(|b| b.0).collect(),
@@ -364,7 +364,7 @@ impl<T: Config> Stream for StorageFetchDescendantKeysStream<T> {
             if let Some(mut keys_fut) = this.keys_fut.take() {
                 let Poll::Ready(keys) = keys_fut.poll_unpin(cx) else {
                     this.keys_fut = Some(keys_fut);
-                    return Poll::Pending
+                    return Poll::Pending;
                 };
 
                 match keys {