message: Don't overflow to negative ints with VKXX, 99.99 is high enough
diff: #define VK11 VK_MAKE_VERSION(1, 1, 0)
  // extensions that are not core in any version
  -#define VKXX VK_MAKE_VERSION(999, 999, 0)
  +#define VKXX VK_MAKE_VERSION(99, 99, 0)
  #if defined(VK_USE_PLATFORM_WIN32_KHR)
  