rzh/hammer.mongo: hammer/hammer.go; 35 LoC

Found a possible issue in [rzh/hammer.mongo](https://www.github.com/rzh/hammer.mongo) at [hammer/hammer.go](https://github.com/rzh/hammer.mongo/blob/fe6577a586e8ca62e03025a226bc68c2d082c38c/hammer/hammer.go#L308-L342)

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 i used in defer or goroutine at line 319

[Click here to see the code in its original context.](https://github.com/rzh/hammer.mongo/blob/fe6577a586e8ca62e03025a226bc68c2d082c38c/hammer/hammer.go#L308-L342)

Click here to show the 35 line(s) of Go which triggered the analyzer.

```go
for i, _ := range workers {
myid := atomic.AddInt32(&worker_id, 1)

if !silent {
log.Println("worker ", myid, " started")
}

if myid == 0 {
go func() {
_initdb_local := _initdb
if !silent {
log.Println("worker ", i, " initialization started")
}
_initdb = false
workers[myid].InitWorker(int(myid), mongo_server, _initdb_local, _profile, _total, dialInfo, nil) // just use array index as worker id, worker will NOT start running immediately
masterMgoSession = workers[0].GetMgoSession()

masterMgoSession = nil // not use mgo pool

if !silent {
log.Println("worker ", i, " initialization done, and wait for others")
}
sg.Done()
}()
} else {
// others will be false
go func() {
workers[myid].InitWorker(int(myid), mongo_server, false, _profile, _total, dialInfo, masterMgoSession) // just use array index as worker id, worker will NOT start running immediately
sg.Done() // I done
if !silent {
log.Println("worker ", myid, " initialization done, and wait for others")
}
}()
}
}

```

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See the descriptions of the classifications [here](https://github.com/github-vet/rangeclosure-findings#how-can-i-help) for more information.

commit ID: fe6577a586e8ca62e03025a226bc68c2d082c38c