Clean the CreateWindowEx code of CW_USEDEFAULT since it's not valid for
a child window and ends up being 0 anyway. Even more, it's useless as the
actual size is given when the window is shown.
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>