Infinite scroll: don't crash if no listing table present.
Infinite scroll: don't crash if no listing table present.

madbook/reddit-plugin-liveupdate,madbook/reddit-plugin-liveupdate,madbook/reddit-plugin-liveupdate,florenceyeun/reddit-plugin-liveupdate,florenceyeun/reddit-plugin-liveupdate,sim642/reddit-plugin-liveupdate,sim642/reddit-plugin-liveupdate,florenceyeun/reddit-plugin-liveupdate,sim642/reddit-plugin-liveupdate