From f90a008271120560f238e6ec2404c0c95f15bfdd Mon Sep 17 00:00:00 2001
From: Andy Wang <cbeuw.andy@gmail.com>
Date: Sun, 12 Apr 2020 01:56:33 +0100
Subject: [PATCH] Skip uploading nil update

---
 internal/server/usermanager/localmanager.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/server/usermanager/localmanager.go b/internal/server/usermanager/localmanager.go
index 53e402e..7a8bdb8 100644
--- a/internal/server/usermanager/localmanager.go
+++ b/internal/server/usermanager/localmanager.go
@@ -138,6 +138,9 @@ func (manager *localManager) AuthoriseNewSession(UID []byte, ainfo Authorisation
 // If no action is needed, there won't be a StatusResponse entry for that user
 func (manager *localManager) UploadStatus(uploads []StatusUpdate) ([]StatusResponse, error) {
 	var responses []StatusResponse
+	if len(uploads) == 0 {
+		return responses, nil
+	}
 	err := manager.db.Update(func(tx *bolt.Tx) error {
 		for _, status := range uploads {
 			var resp StatusResponse