Tinycon: fix currentFavicon being overriden by originalFavicon.
Tinycon: fix currentFavicon being overriden by originalFavicon.

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