Use RT64_SDL_WINDOW_VULKAN to guard X11 detection instead of adding a new define.#24

klorfmorf merged 1 commit intoklorfmorf:devklorfmorf/Goemon64Recomp:devfrom

vanfanel:waylan_use_existing_define_insteadvanfanel/Goemon64Recomp:waylan_use_existing_define_insteadCopy head branch name to clipboard