dzn: Fixes incompatible pointer type error

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16084>

src/microsoft/vulkan/dzn_pipeline.c

@@ -1377,7 +1377,7 @@ dzn_graphics_pipeline_get_state(struct dzn_graphics_pipeline *pipeline,
 
       HRESULT hres = ID3D12Device2_CreatePipelineState(device->dev, &stream_desc,
                                                        &IID_ID3D12PipelineState,
-                                                       &variant->state);
+                                                       (void**)(&variant->state));
       assert(!FAILED(hres));
       he = _mesa_hash_table_insert(pipeline->variants, &variant->key, variant);
       assert(he);