GetCurrentReading often fails

[Gavin-Williams]

I had this working for Gamepad, yesterday, but now I can't get this to work for any input kind. It just crashes

        GameInput.GetCurrentReading(
            (GameInputKind)inputKind,  //  GameInputKindMouse
            null, 
            out IGameInputReading reading);

Exception thrown: 'System.Runtime.InteropServices.COMException' in GameInputHelper.dll
An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in GameInputHelper.dll
0x838A0003

[Gavin-Williams]

It actually always fails if you don't provide a device.

microsoft/GDK#123
microsoft/CsWin32#1799