#0  0x00007f57bf9b20b2 in g_atomic_int_exchange_and_add (atomic=0x24, val=-1)
    at /build/buildd/glib2.0-2.27.90/glib/gatomic-gcc.c:29
No locals.
#1  0x00007f57bfa17d42 in g_variant_unref (value=0x0)
    at /build/buildd/glib2.0-2.27.90/glib/gvariant-core.c:363
No locals.
#2  0x0000000000405301 in method_call (connection=0x18c3010, 
    sender=<value optimized out>, object_path=<value optimized out>, 
    interface_name=<value optimized out>, method_name=<value optimized out>, 
    parameters=<value optimized out>, invocation=0x18be700, 
    user_data=0x18b26a0) at service.c:332
	keyvalue = (GVariant *) 0x18e8360
	key = (
    const gchar *) 0x7f57b80008b0 "/apps/indicators/sound/interested-media-players"
	key_length = 47
	value = (GVariant *) 0x0
	none = (GVariant *) 0x18e3f80
	error = (GError *) 0x0
	path = (gchar *) 0x18d41e0 "/ca/desrt/dconf/Writer/user"
	tag = (gchar *) 0x18e6720 "5:1.79"
	writer = (DConfWriter *) 0x18b26a0
	state = (DConfState *) 0x7fffbc372cf0
	__PRETTY_FUNCTION__ = "method_call"
#3  0x0000000000000000 in ?? ()
No symbol table info available.