WinRT: build fix when using recent versions of the Windows 10 SDK
diff --git a/src/core/winrt/SDL_winrtapp_direct3d.cpp b/src/core/winrt/SDL_winrtapp_direct3d.cpp
index 2a2eb15..7084f93 100644
--- a/src/core/winrt/SDL_winrtapp_direct3d.cpp
+++ b/src/core/winrt/SDL_winrtapp_direct3d.cpp
@@ -827,7 +827,7 @@ static void WINRT_OnBackButtonPressed(BackButtonEventArgs ^ args)
}
}
-#if NTDDI_VERSION == NTDDI_WIN10
+#if NTDDI_VERSION >= NTDDI_WIN10
void SDL_WinRTApp::OnBackButtonPressed(Platform::Object^ sender, Windows::UI::Core::BackRequestedEventArgs^ args)
{