userfm99/zuuly: zuuly.go; 35 LoC

Found a possible issue in [userfm99/zuuly](https://www.github.com/userfm99/zuuly) at [zuuly.go](https://github.com/userfm99/zuuly/blob/e75cd11971dc6f625a8f48e2b5a0b11ae365b765/zuuly.go#L97-L131)

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 k is reassigned at line 98

[Click here to see the code in its original context.](https://github.com/userfm99/zuuly/blob/e75cd11971dc6f625a8f48e2b5a0b11ae365b765/zuuly.go#L97-L131)

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

```go
for k, v := range propertySources {
if key = &k; filterKeyFunc != nil {
key = filterKeyFunc(&k)
}
if key != nil {
if strings.HasSuffix(*key, ".url") {
*key = strings.Replace(*key, ".url", "", 1)
u, _ := url.Parse(zuulURL(v.(string), propertySources))
if zr, ok := zuulRoutes[*key]; ok {
zr.ReverseProxyBaseURL = u.Host
zr.ReverseProxyScheme = u.Scheme
zr.ReverseProxyPath = u.Path
zuulRoutes[*key] = zr
} else {
zuulRoutes[*key] = ZuulRoute{
ReverseProxyBaseURL: u.Host,
ReverseProxyScheme: u.Scheme,
ReverseProxyPath: u.Path,
}
}
} else if strings.HasSuffix(k, ".path") {
*key = strings.Replace(*key, ".path", "", 1)
strVal := v.(string)
strVal = strings.Replace(strVal, "/**", "/*", 1)
if zr, ok := zuulRoutes[*key]; ok {
zr.FrontPath = strVal
zuulRoutes[*key] = zr
} else {
zuulRoutes[*key] = ZuulRoute{
FrontPath: strVal,
}
}
}
}
}

```

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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: e75cd11971dc6f625a8f48e2b5a0b11ae365b765