[PATCH] msxml3/tests: Add mxwriter DOMDocument test.

[Jefferson Carpenter]

On 1/20/2021 6:07 PM, Jefferson Carpenter wrote:
> I was just going by the msdn page that says the IMXWriter output 
> property can be set to either an IStream, a string, or a DOMDocument 
> object [1]

Well, that and some FIXME output that says "unhandled destination type 
0x3181c0 {VT_DISPATCH: 0x2253010}" when I run the game Rise of Legends.