wheelcomplex/fswatcher: fswatcher.go; 25 LoC

Found a possible issue in [wheelcomplex/fswatcher](https://www.github.com/wheelcomplex/fswatcher) at [fswatcher.go](https://github.com/wheelcomplex/fswatcher/blob/fc15843ba6dfd2d1aefb9595f157dee32f708234/fswatcher.go#L660-L684)

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 lazyPath used in defer or goroutine at line 667

[Click here to see the code in its original context.](https://github.com/wheelcomplex/fswatcher/blob/fc15843ba6dfd2d1aefb9595f157dee32f708234/fswatcher.go#L660-L684)

Click here to show the 25 line(s) of Go which triggered the analyzer.

```go
for lazyPath, _ := range lazyList {
delete(lazyList, lazyPath)
lazygw.Add(1)
subscan++
go func() {
//fmt.Printf("watchMgr, new lazyWatch %v || %v\n", lazyPath, rescann)
//self.Dump("befor lazyRWatch" + lazyPath)
if nw := self.lazyRWatch(lazyPath); nw > 0 {
fmt.Printf("watchMgr, new lazyWatch %v || %v\n", nw, lazyPath)
//self.Dump("after lazyRWatch" + lazyPath)
}
//fmt.Printf("watchMgr, end lazyWatch %v || %v\n", lazyPath, rescann)
lazygw.Done()
}()
//fmt.Printf("watchMgr, new lazyWatch %v end.\n", lazyPath)
if self.lazyAddStack.GetCacheSize() >= 2048 {
println("lazyRWatch abort for too many new events", self.lazyAddStack.GetCacheSize())
break
}
if subscan > 2 {
subscan = 0
// blocking
lazygw.Wait()
}
}

```

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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: fc15843ba6dfd2d1aefb9595f157dee32f708234