3 bytes are enough for detection code and we already have tests for
that, except they (accidentally, I assume) include null byte in the stream.
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>