wined3d: Initialize maxAttribs in case it isn't changed by glGetIntegerv.

[Philip Nilsson]

On Sat, Mar 22, 2008 at 08:04:52PM +0100, Stefan Dösinger wrote:
> Am Samstag, 22. März 2008 18:28:52 schrieb Philip Nilsson:
> > glGetIntegerv
> I've seen this behavior very old drivers(87.xx), but I am kinda puzzled why it 
> happens with the new drivers. The patch is OK, but we should investigate why 
> the call fails for you

It appears to do nothing whichever enum I query.  It doesn't even care
if it's fed (-1, NULL).

I'll try some things.