build: quick tests for vk::native support

physical_device.cpp

@@ -63,7 +63,7 @@ VkSurfaceCapabilitiesKHR
 physical_device::surface_capabilities (surface &_surface) const
 {
     return error::try_query (
-        vkGetPhysicalDeviceSurfaceCapabilitiesKHR, native (), _surface.native ()
+        vkGetPhysicalDeviceSurfaceCapabilitiesKHR, native (), _surface
     );
 }
 

tools/hello.cpp

@@ -249,7 +249,7 @@ main (void)
     auto swapchain = cruft::vk::make_owned<cruft::vk::swapchain> (ldevice, &swap_create_info, nullptr);
 
     std::vector<VkImage> swap_images = cruft::vk::error::try_values (
-        vkGetSwapchainImagesKHR, ldevice.native (), swapchain->native ()
+        vkGetSwapchainImagesKHR, ldevice, swapchain
     );
 
     using image_view_ptr = cruft::vk::owned_ptr<cruft::vk::image_view>;