This fixes a mismatch that occurred when the default type of VK_NULL_HANDLE and
VK_DEFINE_NON_DISPATCHABLE_HANDLE had changed in the upstream XML. Because WineVulkan overrides the
definition of VK_DEFINE_NON_DISPATCHABLE_HANDLE we must do the same for VK_NULL_HANDLE so that the
types match.
Signed-off-by: Liam Middlebrook <lmiddlebrook@nvidia.com>
Signed-off-by: Daniel Koch <dkoch@nvidia.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>