minor update to winrt/SDL_sysurl.cpp

from: https://github.com/microsoft/vcpkg/blob/master/ports/sdl2/0006-Update-SDL_sysurl.cpp.patch

src/misc/winrt/SDL_sysurl.cpp

@@ -18,10 +18,9 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
-#include <windows.h>
 
-#include "../../core/windows/SDL_windows.h"
 #include "../SDL_sysurl.h"
+#include "../../core/windows/SDL_windows.h"
 
 int
 SDL_SYS_OpenURL(const char *url)