ZP-390 #comment update last sync time on any change if no last sync time is set #time 20m

git-svn-id: https://z-push.org/svn/z-push/trunk@1669 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5

src/lib/core/syncparameters.php

@@ -397,7 +397,7 @@ class SyncParameters extends StateObject {
     protected function preSerialize() {
         parent::preSerialize();
 
-        if ($this->changed === true && $this->synckeyChanged)
+        if ($this->changed === true && ($this->synckeyChanged || $this->lastsynctime === false))
             $this->lastsynctime = time();
 
         return true;