TV_DISPINFO is incorrectly expanded to NMTVDISPINFOWW because the macro __AW() is applied twice. This leads to compilation errors for projects that use TV_DISPINFO, such as wxWidgets (see for example http://stackoverflow.com/questions/19476533/error-while-compiling-wxwidgets-2-8-12-on-mingw-with-gcc-4-8-1).
Patch that fixes the problem.