FsDiscoverer: Don't pretend to move something that can't be
FsDiscoverer: Don't pretend to move something that can't be

subFolder is a const& and can't be moved, so let's not pretend that's
what we're doing

chouquette/medialibrary,chouquette/medialibrary,chouquette/medialibrary,chouquette/medialibrary