[RESEND] riched20: Fixed crash when the window procedure is called with NULL hWnd

[Alexandre Julliard]

Phil Krylov <phil at newstar.rinet.ru> writes:

>
> ChangeLog:
>
> riched20: Fixed crash when the window procedure is called with NULL hWnd.

You should check that you got a valid pointer from GetWindowLong,
NULL is not the only invalid window handle you can get here.

-- 
Alexandre Julliard
julliard at winehq.org