core: fix lint

Author: rjl493456442

core/blockchain_insert.go

@@ -138,6 +138,7 @@ func (it *insertIterator) next() (*types.Block, error) {
 //
 // Both header and body validation errors (nil too) is cached into the iterator
 // to avoid duplicating work on the following next() call.
+// nolint:unused
 func (it *insertIterator) peek() (*types.Block, error) {
 	// If we reached the end of the chain, abort
 	if it.index+1 >= len(it.chain) {

core/state_prefetcher.go

@@ -58,7 +58,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
 
 	// Iterate over and process the individual transactions
 	for i, tx := range block.Transactions() {
-		tx, stateCpy := tx, statedb.Copy() // closure
+		stateCpy := statedb.Copy() // closure
 		workers.Go(func() error {
 			// If block precaching was interrupted, abort
 			if interrupt != nil && interrupt.Load() {
@@ -69,6 +69,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
 			// Convert the transaction into an executable message and pre-cache its sender
 			msg, err := TransactionToMessage(tx, signer, header.BaseFee)
 			if err != nil {
+				fails.Add(1)
 				return nil // Also invalid block, bail out
 			}
 			stateCpy.SetTxContext(tx.Hash(), i)