[Good case] Handle errors in defer

[kulti]

I hate named returns too :)

Well, one case are good and should be allowed by linter I suppose.

func f() (retErr error) {
	err := errors.New("foo")
	defer func() {
		if retErr == nil { // <-- analyse and replace returning error
			retErr = errors.New("bar")
		}
	}()
	return err
}

[firefart]

will leave this issue open until dependabot has picked it up on the golangci-lint repo

[firefart]

TODO once v1.0.4 is merged into golangci-lint (job runs sunday):

• update option name in golangci-lint
• update tests in golangci-lint

Reference: golangci/golangci-lint#2915

[maratori]

Option is already added to golangci-lint (master branch)

[maratori]

golangci/golangci-lint#2944