stream-engine with a patch to register object before requesting its well-known name

Program terminated with signal 6, Aborted.
#0  0x00002b364c0c3ee5 in raise () from /lib/libc.so.6
(gdb) bt
#0  0x00002b364c0c3ee5 in raise () from /lib/libc.so.6
#1  0x00002b364c0c5403 in abort () from /lib/libc.so.6
#2  0x00002b364bc004b0 in IA__g_logv (log_domain=0x2b364bc27826 "GLib", log_level=G_LOG_LEVEL_CRITICAL, 
    format=0x2b364bc2f60d "%s: assertion `%s' failed", args1=0x7fff60e82fb0)
    at /build/buildd/glib2.0-2.14.6/glib/gmessages.c:497
#3  0x00002b364bc00533 in IA__g_log (log_domain=0x2eaa <Address 0x2eaa out of bounds>, log_level=11946, 
    format=0x6 <Address 0x6 out of bounds>) at /build/buildd/glib2.0-2.14.6/glib/gmessages.c:517
#4  0x00002b364bbf9e82 in IA__g_source_remove (tag=<value optimized out>)
    at /build/buildd/glib2.0-2.14.6/glib/gmain.c:1627
#5  0x00000000004084a0 in handling_channel (stream_engine=0x6408b0) at stream-engine-main.c:126
#6  0x00002b364b990a1f in IA__g_closure_invoke (closure=0x64a5e0, return_value=0x0, n_param_values=1, 
    param_values=0x7fff60e833d0, invocation_hint=0x7fff60e832b0)
    at /build/buildd/glib2.0-2.14.6/gobject/gclosure.c:490
#7  0x00002b364b9a46e8 in signal_emit_unlocked_R (node=0x648320, detail=0, instance=0x6408b0, emission_return=0x0, 
    instance_and_params=0x7fff60e833d0) at /build/buildd/glib2.0-2.14.6/gobject/gsignal.c:2440
#8  0x00002b364b9a6145 in IA__g_signal_emit_valist (instance=0x6408b0, signal_id=<value optimized out>, detail=0, 
    var_args=0x7fff60e83650) at /build/buildd/glib2.0-2.14.6/gobject/gsignal.c:2199
#9  0x00002b364b9a6533 in IA__g_signal_emit (instance=0x2eaa, signal_id=11946, detail=6)
    at /build/buildd/glib2.0-2.14.6/gobject/gsignal.c:2243
#10 0x000000000040c312 in tp_stream_engine_handle_channel (iface=0x6408b0, bus_name=0x7567a0 ":1.2", 
    connection=0x756bc0 "/org/freedesktop/Telepathy/Connection/gabble/jabber/alice_40localhost_2fTelepathy", 
    channel_type=0x756990 "org.freedesktop.Telepathy.Channel.Type.StreamedMedia", 
    channel=0x754aa0 "/org/freedesktop/Telepathy/Connection/gabble/jabber/alice_40localhost_2fTelepathy/MediaChannel0", handle_type=0, handle=0, context=0x756750) at tp-stream-engine.c:1861
#11 0x000000000040d5ca in stream_engine_svc_channel_handler_handle_channel (self=0x6408b0, 
    in_Bus_Name=0x7567a0 ":1.2", 
    in_Connection=0x756bc0 "/org/freedesktop/Telepathy/Connection/gabble/jabber/alice_40localhost_2fTelepathy", 
    in_Channel_Type=0x756990 "org.freedesktop.Telepathy.Channel.Type.StreamedMedia", 
    in_Channel=0x754aa0 "/org/freedesktop/Telepathy/Connection/gabble/jabber/alice_40localhost_2fTelepathy/MediaChannel0", in_Handle_Type=0, in_Handle=0, context=0x756750) at _gen/svc.c:69
#12 0x000000000040e176 in _se_api_marshal_VOID__STRING_BOXED_STRING_BOXED_UINT_UINT_POINTER (closure=0x7fff60e83a80, 
    return_value=0x0, n_param_values=8, param_values=0x756af0, invocation_hint=0x0, marshal_data=0x40d549)
    at _gen/signals-marshal.c:248
#13 0x00002b364b534144 in ?? () from /usr/lib/libdbus-glib-1.so.2
#14 0x00002b364b7628f9 in ?? () from /usr/lib/libdbus-1.so.3
#15 0x00002b364b755fb7 in dbus_connection_dispatch () from /usr/lib/libdbus-1.so.3
#16 0x00002b364b530f75 in ?? () from /usr/lib/libdbus-glib-1.so.2
#17 0x00002b364bbf7eb4 in IA__g_main_context_dispatch (context=0x68de10)
    at /build/buildd/glib2.0-2.14.6/glib/gmain.c:2061
#18 0x00002b364bbfb19d in g_main_context_iterate (context=0x68de10, block=1, dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.14.6/glib/gmain.c:2694
#19 0x00002b364bbfb497 in IA__g_main_loop_run (loop=0x752d80) at /build/buildd/glib2.0-2.14.6/glib/gmain.c:2898
#20 0x00002b364b2d57e3 in tp_cli_dbus_daemon_run_request_name (proxy=0x62dd60, timeout_ms=-1, 
    in0=0x418510 "org.freedesktop.Telepathy.StreamEngine", in1=4, out0=0x7fff60e83f6c, error=0x7fff60e83f70, loop=0x0)
    at ../telepathy-glib/_gen/tp-cli-dbus-daemon-body.h:860
#21 0x000000000040c4a9 in tp_stream_engine_register (self=0x6408b0) at tp-stream-engine.c:1885
#22 0x0000000000408772 in main (argc=1, argv=0x7fff60e840c8) at stream-engine-main.c:261