Fix linter.

go/enclave/crosschain/common.go

@@ -221,7 +221,7 @@ func (ms MessageStructs) EncodeIndex(index int, w *bytes.Buffer) {
 
 func (ms MessageStructs) ForMerkleTree() [][]interface{} {
 	values := make([][]interface{}, 0)
-	for idx, _ := range ms {
+	for idx := range ms {
 		hashedVal := ms.HashPacked(idx)
 		val := []interface{}{
 			"message",
@@ -288,7 +288,7 @@ func (vt ValueTransfers) EncodeIndex(index int, w *bytes.Buffer) {
 
 func (vt ValueTransfers) ForMerkleTree() [][]interface{} {
 	values := make([][]interface{}, 0)
-	for idx, _ := range vt {
+	for idx := range vt {
 		hashedVal := vt.HashPacked(idx)
 		val := []interface{}{
 			"value",

go/enclave/nodetype/sequencer.go

@@ -510,7 +510,7 @@ func (s *sequencer) ExportCrossChainData(ctx context.Context, fromSeqNo uint64,
 		return nil, fmt.Errorf("no batches found for export of cross chain data")
 	}
 
-	// build a merkle tree of all the batches that are valid for the cannonical L1 chain
+	// build a merkle tree of all the batches that are valid for the canonical L1 chain
 	// The proof is double inclusion - one for the message being in the batch's tree and one for
 
 	smtValues := crosschain.MerkleBatches(canonicalBatchesInRollup).ForMerkleTree()

integration/simulation/transaction_injector.go

@@ -347,8 +347,8 @@ func (ti *TransactionInjector) awaitAndFinalizeWithdrawal(tx *types.Transaction,
 		return
 	}
 
-	for k, _ := range xchainTree {
-		xchainTree[k][1] = gethcommon.HexToHash(xchainTree[k][1].(string))
+	for k, value := range xchainTree {
+		xchainTree[k][1] = gethcommon.HexToHash(value[1].(string))
 	}
 
 	tree, err := standard_merkle_tree.Of(xchainTree, crosschain.CrossChainEncodings)