Invokefunction return stackitem isn't in the same type as applicationlogs

[superboyiii]

The return type of ByteArray has been changed to ByteString in VM stackitem in neo-project/neo-vm#309, so invokefunction response should also sync to this type. Now it's still ByteArray.

{
  "jsonrpc": "2.0",
  "method": "invokefunction",
  "params": [
    "0x9bde8f209c88dd0e7ca3bf0af0f476cdd8207789",
    "getValidators",
    []
  ],
  "id": 3
}

{
    "jsonrpc": "2.0",
    "id": 3,
    "result": {
        "script": "10c00c0d67657456616c696461746f72730c14897720d8cd76f4f00abfa37c0edd889c208fde9b41627d5b52",
        "state": "HALT",
        "gas_consumed": "101007390",
        "stack": [
            {
                "type": "Array",
                "value": [
                    {
                        "type": "ByteArray",
                        "value": "AwCbdUDhDyVi5f2PrJ6uwlFmpYsm5BI0j/WoaSe/rCKi"
                    },
                    {
                        "type": "ByteArray",
                        "value": "AwIF6c766lod/FgK8gyNWqJGi7AUjxpeRgX8YiyA5gS6"
                    },
                    {
                        "type": "ByteArray",
                        "value": "AhS68M7qOmbxfn4eg56iX9i+1s2C5rtuaCUBiQZfRP8B"
                    },
                    {
                        "type": "ByteArray",
                        "value": "A0CNzUFjlvZHg6xYfqHhWTxX2f6ogMimoZIOkqJZR3gG"
                    },
                    {
                        "type": "ByteArray",
                        "value": "AqeDS+mzLimB0VfLW706y0LP0R6lw7ECJNekTpjFkQ8b"
                    },
                    {
                        "type": "ByteArray",
                        "value": "AroscPWZbzV6QxmHBYWfriz+oT4RcpYoAHcrPViKnUq9"
                    },
                    {
                        "type": "ByteArray",
                        "value": "Atyq9Coy9wuoau11lObr/sbBkLioKyLDYza5LA/caya4"
                    }
                ]
            }
        ]
    }
}

It should like getapplicationlogs:

{
  "jsonrpc": "2.0",
  "method": "getapplicationlog",
  "params": ["0x65ff5cd413783e599a66a110e52ae5fda941dcabf4d7ab183a08555d86bdd111"],
  "id": 1
} 

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "txid": "0x65ff5cd413783e599a66a110e52ae5fda941dcabf4d7ab183a08555d86bdd111",
        "trigger": "Application",
        "vmstate": "HALT",
        "gas_consumed": "9007810",
        "stack": [],
        "notifications": [
            {
                "contract": "0x8c23f196d8a1bfd103a9dcb1f9ccf0c611377d3b",
                "state": {
                    "type": "Array",
                    "value": [
                        {
                            "type": "ByteString",
                            "value": "VHJhbnNmZXI="
                        },
                        {
                            "type": "Any"
                        },
                        {
                            "type": "ByteString",
                            "value": "VKbLJ5+87cZhYq1K1dHZICuSdD4="
                        },
                        {
                            "type": "Integer",
                            "value": "359184000000"
                        }
                    ]
                }
            },
            {
                "contract": "0x9bde8f209c88dd0e7ca3bf0af0f476cdd8207789",
                "state": {
                    "type": "Array",
                    "value": [
                        {
                            "type": "ByteString",
                            "value": "VHJhbnNmZXI="
                        },
                        {
                            "type": "ByteString",
                            "value": "VKbLJ5+87cZhYq1K1dHZICuSdD4="
                        },
                        {
                            "type": "ByteString",
                            "value": "VKbLJ5+87cZhYq1K1dHZICuSdD4="
                        },
                        {
                            "type": "Integer",
                            "value": "14000000"
                        }
                    ]
                }
            }
        ]
    }
}

[joeqian10]

In PR #245, the GetInvokeResult method directly converts a StackItem to json, so there will no longer be ByteArray type in the response.