Prefer errors.Is for http.ErrServerClosed comparison

Proprietary

Replace err == http.ErrServerClosed with errors.Is(err, http.ErrServerClosed) and err != http.ErrServerClosed with !errors.Is(err, http.ErrServerClosed) for correct wrapped error handling.

org.openrewrite.golang.codequality.PreferErrorsIsHttpServerClosed

mod run . --recipe=org.openrewrite.golang.codequality.PreferErrorsIsHttpServerClosed

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.