stop: fix the warn message in case of nil error

[praveenkumar]

looks like it is missed during 0342835 one and when crc is stopped, it show following warn message.

WARN Failed to remove crc contexts from kubeconfig: <nil>
Stopped the instance

This PR will make sure to handle nil error properly.

Contribution Checklist

• I Keep It Small and Simple: The smaller the PR is, the easier it is to review and have it merged
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Which platform have you tested the code changes on?
  • Linux
  • Windows
  • MacOS

Summary by Sourcery

Bug Fixes:

• Add a nil check before logging errors from cleanKubeconfig to avoid reporting a <nil> error

[sourcery-ai]

Reviewer's Guide

Adjust Stop() cleanup logic to suppress logging when the cleanKubeconfig error is nil, preventing spurious warnings.

File-Level Changes

Change	Details	Files
Add nil check to error handling in Stop() defer function	Modify conditional to require err not nil Retain existing check for ErrNotExist Adjust Warnf invocation to only occur on genuine errors	pkg/crc/machine/stop.go

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[sourcery-ai]

Hey @praveenkumar - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Documentation: all looks good

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[praveenkumar]

/retest

[openshift-ci]

@praveenkumar: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-crc	f427c7f	link	true	/test e2e-crc

Full PR test history. Your PR dashboard.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cfergeau

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