Fix Handler Leak

[stasos24]

Original source code:

kube-openapi/pkg/validation/spec/ref.go

Lines 70 to 77 in 2c72e55

	if r.HasFullURL {
	rr, err := http.Get(v)
	if err != nil {
	return false
	}
	return rr.StatusCode/100 == 2
	}

Fixed Handler leaking before return

[linux-foundation-easycla]

• ✅login: stasos24 / (a815d13)

The committers listed above are authorized under a signed CLA.

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[Jefftree]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Jefftree, stasos24
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[Jefftree]

/assign @sttts @liggitt
(for approval)

[liggitt]

thanks for the leak fix... it looks like IsValidURI is unused in this repo or in kubernetes/kubernetes, and I don't think we actually want code paths that can be triggered to make network requests from here ... I'm wondering if we should delete IsValidURI entirely