core: allow transfer 0 GAS/NEO with zero balance
This commit fixes states diff at 131795 block of mainnet.
Transaction:
```
NEO-GO-VM > loadbase64 DAAQDBSPsxdYh6cITC3gUKI4oWmYxJs49gwUj7MXWIenCEwt4FCiOKFpmMSbOPYUwB8MCHRyYW5zZmVyDBT1Y+pAvCg9TQ4FxI6jBbPyoHNA70FifVtSOQwAEQwUj7MXWIenCEwt4FCiOKFpmMSbOPYMFL1Mb4Fqp6gHiEwzM6xSc8fLS+RpFMAfDAh0cmFuc2ZlcgwU9WPqQLwoPU0OBcSOowWz8qBzQO9BYn1bUjk=
READY: loaded 176 instructions
NEO-GO-VM 0 > ops
INDEX OPCODE PARAMETER
0 PUSHDATA1 ("") <<
2 PUSH0
3 PUSHDATA1 8fb3175887a7084c2de050a238a16998c49b38f6
25 PUSHDATA1 8fb3175887a7084c2de050a238a16998c49b38f6
47 PUSH4
48 PACK
49 PUSH15
50 PUSHDATA1 7472616e73666572 ("transfer")
60 PUSHDATA1 f563ea40bc283d4d0e05c48ea305b3f2a07340ef // NEO token
82 SYSCALL System.Contract.Call (627d5b52)
87 ASSERT
88 PUSHDATA1 ("")
90 PUSH1
91 PUSHDATA1 8fb3175887a7084c2de050a238a16998c49b38f6
113 PUSHDATA1 bd4c6f816aa7a807884c3333ac5273c7cb4be469
135 PUSH4
136 PACK
137 PUSH15
138 PUSHDATA1 7472616e73666572 ("transfer")
148 PUSHDATA1 f563ea40bc283d4d0e05c48ea305b3f2a07340ef // NEO token
170 SYSCALL System.Contract.Call (627d5b52)
175 ASSERT
```
Go's applog:
```
{
"id" : 1,
"result" : {
"txid" : "0x97d2ccb01467b22c73a2cb95f7af298f3a5bd8c849d7044371898b8efecdaabd",
"executions" : [
{
"exception" : "at instruction 87 (ASSERT): ASSERT failed",
"stack" : [],
"gasconsumed" : "4988995",
"notifications" : [],
"trigger" : "Application",
"vmstate" : "FAULT"
}
]
},
"jsonrpc" : "2.0"
}
```
C#'s applog:
```
{
"jsonrpc" : "2.0",
"result" : {
"executions" : [
{
"stack" : [],
"notifications" : [
{
"contract" : "0xef4073a0f2b305a38ec4050e4d3d28bc40ea63f5",
"state" : {
"type" : "Array",
"value" : [
{
"type" : "ByteString",
"value" : "j7MXWIenCEwt4FCiOKFpmMSbOPY="
},
{
"type" : "ByteString",
"value" : "j7MXWIenCEwt4FCiOKFpmMSbOPY="
},
{
"value" : "0",
"type" : "Integer"
}
]
},
"eventname" : "Transfer"
},
{
"contract" : "0xd2a4cff31913016155e38e474a2c06d08be276cf",
"state" : {
"value" : [
{
"type" : "Any"
},
{
"type" : "ByteString",
"value" : "vUxvgWqnqAeITDMzrFJzx8tL5Gk="
},
{
"value" : "2490",
"type" : "Integer"
}
],
"type" : "Array"
},
"eventname" : "Transfer"
},
{
"contract" : "0xef4073a0f2b305a38ec4050e4d3d28bc40ea63f5",
"state" : {
"value" : [
{
"value" : "vUxvgWqnqAeITDMzrFJzx8tL5Gk=",
"type" : "ByteString"
},
{
"value" : "j7MXWIenCEwt4FCiOKFpmMSbOPY=",
"type" : "ByteString"
},
{
"value" : "1",
"type" : "Integer"
}
],
"type" : "Array"
},
"eventname" : "Transfer"
}
],
"vmstate" : "HALT",
"gasconsumed" : "9977990",
"trigger" : "Application",
"exception" : null
}
],
"txid" : "0x97d2ccb01467b22c73a2cb95f7af298f3a5bd8c849d7044371898b8efecdaabd"
},
"id" : 1
}
```
7fc57c9d58