Как закрыть канал

func parse(c chan<- Commentator, link string) {
 
    x, err := goquery.NewDocument(link)
 
    if err != nil {
        fmt.Println(err)
        return
    }
 
    var users, comments []string
    x.Find(".comment").Each(func(indexth int, element *goquery.Selection) {
        x.Find(".user-info__nickname_comment").Each(func(indexth int, element *goquery.Selection) {
            users = append(users, element.Text())
        })
        x.Find(".comment__message").Each(func(indexth int, element *goquery.Selection) {
            comments = append(comments, element.Text())
        })
    })
 
    for i, val := range users {
        c <- Commentator{val, comments[i], link}
    }
}

ch := make(chan Commentator, 5)
for _, link := range links {
        go parse(ch, link)
    }
 
    for val := range ch {
        println(val.String())
    }