fix small nits

crates/primitives/src/revm/env.rs

@@ -123,7 +123,7 @@ pub fn tx_env_with_recovered(transaction: &TransactionSignedEcRecovered) -> TxEn
 
     #[cfg(feature = "optimism")]
     {
-        let mut envelope_buf = Vec::default();
+        let mut envelope_buf = Vec::new();
         transaction.encode_enveloped(&mut envelope_buf);
         fill_tx_env(&mut tx_env, transaction.as_ref(), transaction.signer(), envelope_buf.into());
     }

crates/rpc/rpc-engine-api/src/engine_api.rs

@@ -262,12 +262,12 @@ where
         self.inner.task_spawner.spawn_blocking(Box::pin(async move {
             if count > MAX_PAYLOAD_BODIES_LIMIT {
                 tx.send(Err(EngineApiError::PayloadRequestTooLarge { len: count })).ok();
-                return;
+                return
             }
 
             if start == 0 || count == 0 {
                 tx.send(Err(EngineApiError::InvalidBodiesRange { start, count })).ok();
-                return;
+                return
             }
 
             let mut result = Vec::with_capacity(count as usize);
@@ -291,7 +291,7 @@ where
                     }
                     Err(err) => {
                         tx.send(Err(EngineApiError::Internal(Box::new(err)))).ok();
-                        return;
+                        return
                     }
                 };
             }