Several applications -Steam, Battle.net for instance- handle the
WM_NCCALCSIZE message to override the non-client areas size and make
the client area cover the whole window, instead of changing the styles.

In winex11.drv, in decorated mode, we adjust the window rect according
to the window style to hide the unwanted decorations behind the frame,
but when client and window rects are equals, there's nothing to hide
and the actual window styles are irrelevant and can safely be ignored.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=40930Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>