Address wrong path when empty
Address wrong path when empty

In #688 the change from getCanonicalPath to getAbsolutePath improved performance, but the case of an empty path was not resolving appropriately for the VLC video player.
jrassa/EmulationStation,joolswills/EmulationStation,jrassa/EmulationStation,jrassa/EmulationStation,joolswills/EmulationStation,jrassa/EmulationStation,joolswills/EmulationStation,joolswills/EmulationStation