Fix test

Author: lunny

models/issues/comment.go

@@ -1313,15 +1313,13 @@ func (c *Comment) HasOriginalAuthor() bool {
 	return c.OriginalAuthor != "" && c.OriginalAuthorID != 0
 }
 
-func CountCommentsBuilder(issueID int64) *builder.Builder {
-	return builder.Select("count(*)").From("comment").Where(builder.Eq{
+func UpdateIssueNumComments(ctx context.Context, issueID int64) error {
+	countCommentsBuilder := builder.Select("count(*)").From("comment").Where(builder.Eq{
 		"issue_id": issueID,
 	}.And(builder.In("type", ConversationCountedCommentType()...)))
-}
 
-func UpdateIssueNumComments(ctx context.Context, issueID int64) error {
 	_, err := db.GetEngine(ctx).
-		SetExpr("num_comments", CountCommentsBuilder(issueID)).
+		SetExpr("num_comments", countCommentsBuilder).
 		ID(issueID).
 		Update(new(Issue))
 	return err