spice: unref GSocketAddress
spice: unref GSocketAddress

No need to keep it around after calling
g_socket_listener_add_address().

Signed-off-by: Jakub Janků <e6d62f7189d9c45efd907e4f2baf6f535f551138@redhat.com>

GNOME/phodav,GNOME/phodav