eth, internal/ethapi: fix lint

(cherry picked from commit c867cce)

# Conflicts:
#	eth/api.go
#	internal/ethapi/api.go

Author: CaraWang

eth/api_debug.go

@@ -436,7 +436,7 @@ func (api *DebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error
 func (api *DebugAPI) GetBlockReceipts(blockHash common.Hash) ([]map[string]interface{}, error) {
 	if receipts := api.eth.blockchain.GetReceiptsByHash(blockHash); receipts != nil {
 		if block := api.eth.blockchain.GetBlockByHash(blockHash); block != nil {
-			return ethapi.ToTxReceipts(block.Header().Number.Uint64(), blockHash, receipts, block)
+			return ethapi.ToTxReceipts(api.eth.APIBackend.ChainConfig(), block.Header().Number.Uint64(), blockHash, receipts, block)
 		}
 	}
 	return nil, errors.New("unknown receipts")

internal/ethapi/api.go

@@ -2013,11 +2013,10 @@ func (s *TransactionAPI) GetTransactionReceiptsByBlockNumber(ctx context.Context
 		return nil, fmt.Errorf("block %d not found", blockNumber)
 	}
 
-	return ToTxReceipts(blockNumber, blockHash, receipts, block)
+	return ToTxReceipts(s.b.ChainConfig(), blockNumber, blockHash, receipts, block)
 }
 
-func ToTxReceipts(blockNumber uint64, blockHash common.Hash, receipts types.Receipts, block *types.Block) ([]map[string]interface{}, error) {
-
+func ToTxReceipts(config *params.ChainConfig, blockNumber uint64, blockHash common.Hash, receipts types.Receipts, block *types.Block) ([]map[string]interface{}, error) {
 	txs := block.Transactions()
 	if len(txs) != len(receipts) {
 		return nil, fmt.Errorf("txs length doesn't equal to receipts' length")
@@ -2026,7 +2025,7 @@ func ToTxReceipts(blockNumber uint64, blockHash common.Hash, receipts types.Rece
 	txReceipts := make([]map[string]interface{}, 0, len(txs))
 	for idx, receipt := range receipts {
 		tx := txs[idx]
-		signer := types.MakeSigner(s.b.ChainConfig(), block.Number(), block.Time())
+		signer := types.MakeSigner(config, block.Number(), block.Time())
 		from, _ := types.Sender(signer, tx)
 
 		fields := map[string]interface{}{