Observed with Lync 2010 setup in ReactOS. The embedded Silverlight
setup hits this case (no LASTUSEDSOURCE in the registry).
Signed-off-by: Mark Jansen <mark.jansen@reactos.org>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>