Comment 2 for bug 958277

StacktraceTop:
 g_object_notify_queue_thaw (object=0x15368b0, nqueue=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gobject.c:284
 g_object_newv (object_type=<optimized out>, n_parameters=4, parameters=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gobject.c:1752
 g_object_new_valist (object_type=21931008, first_property_name=<optimized out>, var_args=0x7fff9d221fd8) at /build/buildd/glib2.0-2.31.20/./gobject/gobject.c:1830
 g_object_new (object_type=21931008, first_property_name=0x7fd2cc2c9c03 "data") at /build/buildd/glib2.0-2.31.20/./gobject/gobject.c:1545
 g_memory_output_stream_new (data=0x0, size=0, realloc_function=0x7fd2cbcc7c70 <g_realloc>, destroy_function=0x7fd2cbcc7cf0 <g_free>) at /build/buildd/glib2.0-2.31.20/./gio/gmemoryoutputstream.c:368