Comment 2 for bug 1211955

StacktraceTop:
 gtk_box_pack (box=0x87e7450, child=0x879bd40, expand=0, fill=0, padding=0, pack_type=GTK_PACK_START) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkbox.c:985
 gtk_box_pack_start (box=<optimized out>, box@entry=0x87e7450, child=<optimized out>, expand=<optimized out>, expand@entry=0, fill=<optimized out>, fill@entry=0, padding=padding@entry=0) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkbox.c:1428
 app_chooser_online_get_default_ready_cb (source=0x86ac730, res=0x878b608, user_data=user_data@entry=0x883f160) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkappchooserdialog.c:189
 g_simple_async_result_complete (simple=0x878b608) at /build/buildd/glib2.0-2.37.5/./gio/gsimpleasyncresult.c:777
 pk_proxy_created_cb (source=0x88886c0, result=0x888b450, user_data=user_data@entry=0x86ac730) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkappchooseronlinepk.c:188