gdi32: check for null-pointer in CreateDIBSection

[Jesse Allen]

On 5/19/07, Louis. Lenders <xerox_xerox2000 at yahoo.co.uk> wrote:
> Hi , this fixes bug 8066,
> http://bugs.winehq.org/show_bug.cgi?id=8066
>
> See the crash log here:
> http://bugs.winehq.org/attachment.cgi?id=5800&action=view ,
> CreateDIBSection is called with bitmapinfo = null.
>
>


The program should be passing in a correctly initialized BITMAPINFO.
We need to make sure this isn't hiding another bug. Could you provide
a test case?