Windows: Fixed bug in interface autoclaim

* Bug was introduced in f2b19e4a32c1445f4fea06beca61e8c7e7757950
* Closes #78
* Closes #80
Windows: Improve error reporting in winusbx_claim_interface()

* After the filter detection code is run, the error reported may
  have nothing to do with the original error (or report SUCCESS)
  and is unhelpful
* Also change TODO comments to default VS2012 task style