SetupDiGetClassDevs should return a typedef handle

[AArnott]

Per the docs for the method, the SetupDiGetClassDevs method should have metadata indicating that it returns a typedef struct for a handle that is released with SetupDiDestroyDeviceInfoList.
At present, it returns void*.

[taufikrh]

Looks like it's fixed in #856

[AArnott]

Duplicate of #856