Seek is not implemented but not completing the command makes pending or
later queued commands to not be executed.

This partially fixes Guilty Gear Strive being stuck on character
selection screen.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>