Otherwise, the only thing holding a reference to a device may be a
device_file. If this is released in delete_device(), the subsequent call to
unlink_named_object() will crash. This can occur if a device driver crashes
with pending IRPs outstanding.
Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>