fix: fix slice init length

[cuishuang]

The intention here should be to initialize a slice with a capacity of len(oldIPs) and len(newIPs) rather than initializing the length of this slice.

The only demo: https://go.dev/play/p/q1BcVCmvidW

[github-actions]

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[cuishuang]

friengly ping

[github-actions]

This repository uses an automated workflow to automatically label pull requests which have not had any activity (commit/comment/label) for 60 days. This helps us manage the community pull requests better. If the pull request is still relevant, please add a comment to the pull request so the workflow can remove the label and we know it is still valid. If it is no longer relevant (or possibly fixed in the latest release), the workflow will automatically close the pull request in 14 days. Thank you for your contributions.

[cuishuang]

friengly ping

[mitulshah-suse]

Closed and reopened, to retrigger CI.

[cuishuang]

Closed and reopened, to retrigger CI.

It seems that all CI has passed.

[jiaqiluo]

hi @cuishuang , thank you for raising the fix!
Could you raise another PR to cherry-pick the fix to the release/v1.7 branch?

[cuishuang]

hi @cuishuang , thank you for raising the fix! Could you raise another PR to cherry-pick the fix to the release/v1.7 branch?

Of course. The new pr for the release/v1.7 branch. #3785