truechain/truechain-consensus-core: trueconsensus/fastchain/node.go; 44 LoC

Found a possible issue in [truechain/truechain-consensus-core](https://www.github.com/truechain/truechain-consensus-core) at [trueconsensus/fastchain/node.go](https://github.com/truechain/truechain-consensus-core/blob/1414968a97a8f61cd64f027d6bd0b2b734f1c24b/trueconsensus/fastchain/node.go#L783-L826)

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first issue it finds, so please do not limit your consideration to the contents of the below message.

> range-loop variable tx used in defer or goroutine at line 798

[Click here to see the code in its original context.](https://github.com/truechain/truechain-consensus-core/blob/1414968a97a8f61cd64f027d6bd0b2b734f1c24b/trueconsensus/fastchain/node.go#L783-L826)

Click here to show the 44 line(s) of Go which triggered the analyzer.

```go
for _, tx := range blk.Txns {
if _, ok := VerifySender(tx, nd.cfg.Network.N); !ok { // Verify if tx came from client
return false
}

foundTx := make(chan *pb.Transaction, 1)
txInPool := make(chan bool, 1)
go func() {
// Setup timer to track timeout on transaction to appear on pool
timer := time.NewTimer(time.Duration(nd.timeout) * time.Second)
go func(t *time.Timer) {
<-timer.C
txInPool <- false
}(timer)

txHash := common.BytesToHash(tx.Data.Hash)
for {
if t := nd.txPool.Get(txHash); t != nil {
foundTx <- t
txInPool <- true
break
}
}
}()

okchan := make(chan bool, 1)
go func() {
found := <-txInPool
if !found {
okchan <- false // tx not found in txnpool after timeout
}

t := <-foundTx
if t.Data.AccountNonce != tx.Data.AccountNonce {
okchan <- false // tx account nonce from txPool didn't match that in block
}

okchan <- true
}()

if ok := <-okchan; !ok {
return false
}
}

```

Leave a reaction on this issue to contribute to the project by classifying this instance as a **Bug** :-1:, **Mitigated** :+1:, or **Desirable Behavior** :rocket:
See the descriptions of the classifications [here](https://github.com/github-vet/rangeclosure-findings#how-can-i-help) for more information.

commit ID: 1414968a97a8f61cd64f027d6bd0b2b734f1c24b