panic in index/resolver

[4tsirata]

I just stumbled upon a panic in index/resolver.go line 517 while using vacuum linting a schema like the following one.

openapi: 3.0.3
info:
  description: test
  title: test
  version: test
paths: {}
components:
  schemas:
    test:
      type: object
      properties:
        Reference:
          $ref: '#/components/schemas/ReferenceType'
    ReferenceType:
      type: object
      required: [$ref]
      properties: 
        $ref:
          type: string

515			if i%2 == 0 && n.Value == "$ref" {
516
517				if !utils.IsNodeStringValue(node.Content[i+1]) {
518					continue
519				}

Maybe a check of the slice length could prevent the panic

515			if i%2 == 0 && n.Value == "$ref" && len(node.Content) > i%2+1 {

[daveshanley]

Nice find! will fix.

[daveshanley]

Your suggestion was added in v0.16.0

https://github.com/pb33f/libopenapi/blob/main/index/resolver.go#L514