chore: fix lint errors (#6951)

internal/db/issue.go

@@ -315,9 +315,7 @@ func (issue *Issue) clearLabels(e *xorm.Session) (err error) {
 
 	// NOTE: issue.removeLabel slices issue.Labels, so we need to create another slice to be unaffected.
 	labels := make([]*Label, len(issue.Labels))
-	for i := range issue.Labels {
-		labels[i] = issue.Labels[i]
-	}
+	copy(labels, issue.Labels)
 	for i := range labels {
 		if err = issue.removeLabel(e, labels[i]); err != nil {
 			return fmt.Errorf("removeLabel: %v", err)

internal/form/form.go

@@ -99,11 +99,8 @@ func validate(errs binding.Errors, data map[string]interface{}, f Form, l macaro
 	Assign(f, data)
 
 	typ := reflect.TypeOf(f)
-	val := reflect.ValueOf(f)
-
 	if typ.Kind() == reflect.Ptr {
 		typ = typ.Elem()
-		val = val.Elem()
 	}
 
 	for i := 0; i < typ.NumField(); i++ {