This noticeably improves stream startup time. The process of typefinding and
negotiation takes about 70 ms for a simple test file on one machine, and this
is currently done twice. This patch replaces the second instance with a simple
seek, which takes less than 10 ms.
Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>