ypapax/kpi_dashboard: util.go; 25 LoC

Found a possible issue in [ypapax/kpi_dashboard](https://www.github.com/ypapax/kpi_dashboard) at [util.go](https://github.com/ypapax/kpi_dashboard/blob/cb26be148b03e99920a30b3a49068730761140ca/util.go#L51-L75)

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.

> reference to intf is reassigned at line 64

[Click here to see the code in its original context.](https://github.com/ypapax/kpi_dashboard/blob/cb26be148b03e99920a30b3a49068730761140ca/util.go#L51-L75)

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

```go
for _, intf := range intfs {
cidrs, err := GetIPAddrs(intf.Name)
if err != nil {
return "", "", UNDEFINED, nil, fmt.Errorf("error looking interface - %v", err)
}

for _, cidr := range cidrs {
ip, _, err := net.ParseCIDR(cidr.String())
if err != nil {
continue
}
if ip.String() == h {
localAddr = h
localIntf = &intf
break OuterLoop
}
// Use 1st interface for bind = 0.0.0.0
// XXX Bad idea
if h == "0.0.0.0" {
localAddr = ip.String()
localIntf = &intf
break OuterLoop
}
}
}

```

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commit ID: cb26be148b03e99920a30b3a49068730761140ca