Fixed warning: "SDL_VIDEO_RENDER_D3D12" is not defined, evaluates to 0

src/core/windows/SDL_windows.h

@@ -36,7 +36,7 @@
 #endif
 #undef WINVER
 #undef _WIN32_WINNT
-#if SDL_VIDEO_RENDER_D3D12 || defined(HAVE_DXGI1_6_H)
+#if defined(SDL_VIDEO_RENDER_D3D12) || defined(HAVE_DXGI1_6_H)
 #define _WIN32_WINNT 0xA00 // For D3D12, 0xA00 is required
 #elif defined(HAVE_SHELLSCALINGAPI_H)
 #define _WIN32_WINNT 0x603 // For DPI support