From https://pkg.go.dev/net/http#Client.Do
> If the returned error is nil, the Response will contain a non-nil
> Body which the user is expected to close. If the Body is not both read
> to EOF and closed, the Client's underlying RoundTripper (typically
> Transport) may not be able to re-use a persistent TCP connection to
> the server for a subsequent "keep-alive" request.
These were found using https://github.com/timakin/bodyclose. Not adding it as a linter for now as it was producing false positive(I think) on OneDrive item. The close was happening in a9918d2f78/src/internal/kopia/upload.go (L68) instead of right alongside it which might be why it got thrown off.
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