fixed: We should't try to load favourities:// paths

This fixes errors in our log like:

18:00:27 T:140737353811840   ERROR: Unable to load favourites:// (row 0 column 0)
18:00:27 T:140737353811840   ERROR: GetDirectory - Error getting favourites://

when accessing the favorites menu. Pretty sure this fix is correct but not 100% thus the PR..