Before finishing async run, graph->stream_start isn't stable.
This will cause graph->current_pos to be out of playback duration.
Since graph->current_pos is out of the range, the playback will
be stopped.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52200Signed-off-by: Akihiro Sagawa <sagawa.aki@gmail.com>
Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>