Comment 2 for bug 960846

StacktraceTop:
 mpris2_controller_validate_playlists_details (self=0x8f06b68) at mpris2-controller.c:1268
 mpris2_controller_fetch_active_playlist (self=0x8f06b68) at mpris2-controller.c:1337
 g_timeout_dispatch (source=0x8f31a40, callback=0x805f5c0 <_mpris2_controller_fetch_active_playlist_gsource_func>, user_data=0x8f06b68) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3859
 g_main_dispatch (context=0x8ee8080) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:2515
 g_main_context_dispatch (context=0x8ee8080) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3052