fix: clippy warnings

Signed-off-by: William Hankins <[email protected]>

Author: whankinsiv

modules/historical_accounts_state/src/immutable_historical_account_store.rs

@@ -85,7 +85,7 @@ impl ImmutableHistoricalAccountStore {
 
             // Persist rewards
             if config.store_rewards_history {
-                let rewards = entry.reward_history.as_ref().map(|v| v.clone()).unwrap_or_default();
+                let rewards = entry.reward_history.clone().unwrap_or_default();
                 batch.insert(&self.rewards_history, epoch_key, to_vec(&rewards)?);
             }