Comment 2 for bug 1412656

StacktraceTop:
 g_str_equal (v1=v1@entry=0x0, v2=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/ghash.c:1776
 message_filter (connection=0xfd75b0, message=0xfd7800, user_data=<optimized out>) at gdbus/watch.c:534
 dbus_connection_dispatch (connection=connection@entry=0xfd75b0) at ../../dbus/dbus-connection.c:4677
 message_dispatch (data=0xfd75b0, data@entry=<error reading variable: value has been optimized out>) at gdbus/mainloop.c:76
 g_timeout_dispatch (source=0xfe0150, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4520