MM-33746 Add TotalMsgCountRoot and MsgCountRoot columns (#17150)

app/post.go

@@ -1411,7 +1411,7 @@ func (a *App) countMentionsFromPost(user *model.User, post *model.Post) (int, *m
 
 	if channel.Type == model.CHANNEL_DIRECT {
 		// In a DM channel, every post made by the other user is a mention
-		count, nErr := a.Srv().Store.Channel().CountPostsAfter(post.ChannelId, post.CreateAt-1, channel.GetOtherUserIdForDM(user.Id))
+		count, _, nErr := a.Srv().Store.Channel().CountPostsAfter(post.ChannelId, post.CreateAt-1, channel.GetOtherUserIdForDM(user.Id))
 		if nErr != nil {
 			return 0, model.NewAppError("countMentionsFromPost", "app.channel.count_posts_since.app_error", nil, nErr.Error(), http.StatusInternalServerError)
 		}