The standard File Open Dialog creates an empty WS_EX_CONTROLPARENT
child dialog which shouldn't receive focus.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=46215Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>