Fix ExitWindows()

[Robert Shearman]

Francois Gouget wrote:

>
>-                if (SendMessageTimeoutW( *phwnd, WM_QUERYENDSESSION, 0, 0, send_flags, INFINITE, &result) && !result) break;
>+                if (SendMessageTimeoutW( *phwnd, WM_QUERYENDSESSION, 0, 0, send_flags, 0, &result))
>  
>

Was this change deliberate to remove the check of result? If so, I don't 
see where else the result of the message can be properly checked.

-- 
Rob Shearman