Improve performance of dashboard (#4977)

models/issue_stopwatch.go

@@ -49,6 +49,10 @@ func CreateOrStopIssueStopwatch(user *User, issue *Issue) error {
 	if err != nil {
 		return err
 	}
+	if err := issue.loadRepo(x); err != nil {
+		return err
+	}
+
 	if exists {
 		// Create tracked time out of the time difference between start date and actual date
 		timediff := time.Now().Unix() - int64(sw.CreatedUnix)
@@ -112,6 +116,10 @@ func CancelStopwatch(user *User, issue *Issue) error {
 			return err
 		}
 
+		if err := issue.loadRepo(x); err != nil {
+			return err
+		}
+
 		if _, err := CreateComment(&CreateCommentOptions{
 			Doer:  user,
 			Issue: issue,