dzn: Clean up dri options cache

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32011>

src/microsoft/vulkan/dzn_device.c

@@ -238,6 +238,9 @@ dzn_instance_destroy(struct dzn_instance *instance, const VkAllocationCallbacks
    if (instance->d3d12_mod)
       util_dl_close(instance->d3d12_mod);
 
+   driDestroyOptionCache(&instance->dri_options);
+   driDestroyOptionInfo(&instance->available_dri_options);
+
    vk_free2(vk_default_allocator(), alloc, instance);
 }