Add vlclua_dir_list_free to free list created by vlclua_dir_list and use it.

[vlc] / doc / bugreport-howto.txt

  Bug report  HOWTO
 - - - - - - - - - -

 Please visit http://www.videolan.org/support/bug-reporting.html
 for details on how to properly report/diagnose a bug in VLC media player.