tracker-miner-fs: Fix case where $HOME/.config/xdg-dirs.dirs doesn't exist
tracker-miner-fs: Fix case where $HOME/.config/xdg-dirs.dirs doesn't exist

hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker