Put the string buffer at the end of the struct to
match the Windows behaviour and avoid unnecessary
pointer arithmetic.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51017Signed-off-by: Bernhard Kölbl <besentv@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>