dbus: fix file descriptors leak
dbus: fix file descriptors leak

(cherry picked from commit 67aa058beb6ee58181c821ff217dfda1d5a36363)

jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2