fix -composite literal uses unkeyed fields-

client/btctxgen/main.go

@@ -114,7 +114,7 @@ LOOP:
 			if btcTXOAddr == nil {
 				log.Warn("TxOut: can't decode address")
 			}
-			txo := blockchain.TXOutput{int(btcTXO.Value), btcTXOAddr.Hash160, nodeShardID}
+			txo := blockchain.TXOutput{Amount: int(btcTXO.Value), Address: btcTXOAddr.Hash160, ShardID: nodeShardID}
 			tx.TxOutput = append(tx.TxOutput, txo)
 		}
 		tx.SetID()

client/txgen/main.go

@@ -164,10 +164,7 @@ func generateCrossShardTx(txInfo *TxInfo) {
 	}
 
 	// Spend the utxo from the current shard to a random address in [0 - N)
-	txout := blockchain.TXOutput{
-		Amount:  txInfo.value,
-		Address: pki.GetAddressFromInt(rand.Intn(setting.numOfAddress) + 1),
-		ShardID: nodeShardID}
+	txout := blockchain.TXOutput{Amount: txInfo.value, Address: pki.GetAddressFromInt(rand.Intn(setting.numOfAddress) + 1), ShardID: nodeShardID}
 
 	txOutputs := []blockchain.TXOutput{txout}