Here it's not a warning but an error.

	error C1083: Cannot open filetype file: 'tinyxml.h' : No such file or directory  |  ofxxmlsettings.h  6

I agree that this change is very ugly/horrible, but
* It's included in my project:
 `<ClInclude Include="..\..\..\addons\ofxXmlSettings\libs\tinyxml.h" />`

* Also, I saw it in Tess2 lib code, in a [revision](https://code.google.com/p/libtess2/source/detail?r=8).