mssch/kismatic: pkg/install/validate.go; 3 LoC

Found a possible issue in [mssch/kismatic](https://www.github.com/mssch/kismatic) at [pkg/install/validate.go](https://github.com/mssch/kismatic/blob/810a83d0ea7a637ca7ae8ac9f8901656d07946d2/pkg/install/validate.go#L473-L475)

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.

>

[Click here to see the code in its original context.](https://github.com/mssch/kismatic/blob/810a83d0ea7a637ca7ae8ac9f8901656d07946d2/pkg/install/validate.go#L473-L475)

Click here to show the 3 line(s) of Go which triggered the analyzer.

```go
for i, n := range ng.Nodes {
v.validateWithErrPrefix(fmt.Sprintf("Node #%d", i+1), &n)
}

```

Click here to show extra information the analyzer produced.

```
No path was found through the callgraph that could lead to a function which writes a pointer argument.

No path was found through the callgraph that could lead to a function which passes a pointer to third-party code.

root signature {validateWithErrPrefix 2} was not found in the callgraph; reference was passed directly to third-party code
```

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: 810a83d0ea7a637ca7ae8ac9f8901656d07946d2

Start with pkg/install/validate.go at lines 473-475 and read the surrounding validation code and the validateWithErrPrefix call. Compare the analyzer's report with the shown range-loop usage, then leave the requested reaction classifying it as Bug, Mitigated, or Desirable Behavior.

Written by the indexing model from the issue text.