[D3D9] fix for SetFVF memleak [2nd try+patch]

[Ivan Gyurdiev]

H. Verbeet wrote:
> On 14/10/06, Ivan Gyurdiev <ivg231 at gmail.com> wrote:
>> Exactly... so why is the refcount 1 *after* GetVertexDeclaration.
> Perhaps the declaration in only generated when calling
> GetVertexDeclaration(). If you call it twice, does it return the same
> pointer?
No.. I tried that too.
The same pointer is returned.