[location] Fix scrobble time

vrobbler/apps/scrobbles/scrobblers.py

@@ -1081,7 +1081,7 @@ def gpslogger_scrobble_location(data_dict: dict, user_id: int) -> Scrobble:
             "position_provider": provider,
         }
     )
-    if scrobble.timestamp:
+    if scrobble.in_progress and scrobble.timestamp:
         scrobble.playback_position_seconds = (
             timezone.now() - scrobble.timestamp
         ).seconds