entity: Enable spfs_entity_find_path for unnamed roots
entity: Enable spfs_entity_find_path for unnamed roots

It's a much more useful function without this made-up restriction; I
don't know why I added it in the first place...

Signed-off-by: Anton Lofgren <644ec9b400317727ea69122efab4ea2fa19fba46@gmail.com>

catharsis/spotifile,catharsis/spotifile,catharsis/spotifile