The sample allocator callbacks own a reference to the source reader,
which creates a reference loop and prevents the source reader from
being properly destroyed.
Signed-off-by: Giovanni Mascellani <gmascellani@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>