dlls/winex11.drv/dib.c: initialize two warnings (RESEND)

[Gerald Pfeifer]

On Tue, 20 Oct 2009, Alexandre Julliard wrote:
>> I verified that I still need this patch originally sent on May 31st
>> to address to compiler warings with current versions of GCC 4.5.0.
>>
>> This seems to be the only invocation of DIB_GetBitmapInfo which
>> requires this kind of extra initialization.
> I expect you can avoid that by restructuring the code a little.

I looked into this in more detail, and now remember why I couldn't
do this.