This patch fixes a potential issue on the Wine test VMs where messages
can be received by other VMs before they are ready to process them.
wsdapi.dll then filters out the subsequent duplicate messages from the
correct VM and the test fails. Avoid this by not using a hard-coded GUID.
Signed-off-by: Owen Rudge <orudge@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>