[FAB-15927] Better expression for golang

Better for loop expression and veriable scope for golang

Signed-off-by: kukgini <kukgini@gmail.com>
Change-Id: I83a4ead246039b5b10334467f17c808465492725

chaincode/fabcar/go/fabcar.go

@@ -106,13 +106,11 @@ func (s *SmartContract) initLedger(APIstub shim.ChaincodeStubInterface) sc.Respo
 		Car{Make: "Holden", Model: "Barina", Colour: "brown", Owner: "Shotaro"},
 	}
 
-	i := 0
-	for i < len(cars) {
+	for i, car := range cars {
 		fmt.Println("i is ", i)
-		carAsBytes, _ := json.Marshal(cars[i])
+		carAsBytes, _ := json.Marshal(car)
 		APIstub.PutState("CAR"+strconv.Itoa(i), carAsBytes)
-		fmt.Println("Added", cars[i])
-		i = i + 1
+		fmt.Println("Added", car)
 	}
 
 	return shim.Success(nil)