wasapi: Avoid including our copy of devicetopology.h when not MingGW.  Build fix for missing LPCWAVEFORMATEX definition.
wasapi: Avoid including our copy of devicetopology.h when not MingGW.  Build fix for missing LPCWAVEFORMATEX definition.

kinetiknz/cubeb,kinetiknz/cubeb,padenot/cubeb,kinetiknz/cubeb,ieei/cubeb,padenot/cubeb,ieei/cubeb,padenot/cubeb