Merge pull request #505 in ZP/z-push from feature/ZP-1168-log-wait-time-in-info-level to develop

* commit 'aef0c5cd':
  ZP-1168 Make sure waittime is updated when after leaving heartbeat in Sync.

src/lib/request/sync.php

@@ -687,6 +687,9 @@ class Sync extends RequestProcessor {
                     }
                 }
 
+                // update the waittime waited
+                self::$waitTime = $sc->GetWaitedSeconds();
+
                 // in case there are no changes and no other request has synchronized while we waited, we can reply with an empty response
                 if (!$foundchanges && $status == SYNC_STATUS_SUCCESS) {
                     // if there were changes to the SPA or CPOs we need to save this before we terminate