[fix] golint

Author: asciimoo

colly.go

@@ -931,7 +931,7 @@ func (c *Collector) handleOnHTML(resp *Response) error {
 		doc.Find(cc.Selector).Each(func(_ int, s *goquery.Selection) {
 			for _, n := range s.Nodes {
 				e := NewHTMLElementFromSelectionNode(resp, s, n, i)
-				i += 1
+				i++
 				if c.debugger != nil {
 					c.debugger.Event(createEvent("html", resp.Request.ID, c.ID, map[string]string{
 						"selector": cc.Selector,

colly_test.go

@@ -639,9 +639,11 @@ func TestHTMLElement(t *testing.T) {
 		t.Fatal(err)
 	}
 	elements := []*HTMLElement{}
-	doc.Find(sel).Each(func(i int, s *goquery.Selection) {
+	i := 0
+	doc.Find(sel).Each(func(_ int, s *goquery.Selection) {
 		for _, n := range s.Nodes {
-			elements = append(elements, NewHTMLElementFromSelectionNode(resp, s, n))
+			elements = append(elements, NewHTMLElementFromSelectionNode(resp, s, n, i))
+			i++
 		}
 	})
 	elementsLen := len(elements)