Fix geofence manager crash
Fix geofence manager crash

tsmgeek/traccar,AnshulJain1985/Roadcast-Tracker,orcoliver/traccar,stalien/traccar_test,ninioe/traccar,jon-stumpf/traccar,jon-stumpf/traccar,AnshulJain1985/Roadcast-Tracker,renaudallard/traccar,5of9/traccar,stalien/traccar_test,tananaev/traccar,jssenyange/traccar,tananaev/traccar,ninioe/traccar,jon-stumpf/traccar,ninioe/traccar,orcoliver/traccar,5of9/traccar,tsmgeek/traccar,orcoliver/traccar,jssenyange/traccar,jssenyange/traccar,tsmgeek/traccar,renaudallard/traccar,tananaev/traccar