Refactor issue indexer (#5363)

models/issue_comment.go

@@ -1035,6 +1035,7 @@ func UpdateComment(doer *User, c *Comment, oldContent string) error {
 	if err := c.LoadIssue(); err != nil {
 		return err
 	}
+
 	if err := c.Issue.LoadAttributes(); err != nil {
 		return err
 	}
@@ -1093,6 +1094,7 @@ func DeleteComment(doer *User, comment *Comment) error {
 	if err := comment.LoadIssue(); err != nil {
 		return err
 	}
+
 	if err := comment.Issue.LoadAttributes(); err != nil {
 		return err
 	}