- All audio device handles are initialized to -1 and set to -1 when closed.

- All audio device handles are initialized to -1 and set to -1 when closed.
- WINE_WM_HEADER event should *NOT* make the recording thread start. The
  thread should only start through waveInStart. The application calling
  waveInAddBuffer might not be in a state to provide another buffer in
  a period of time short enough to avoid buffer underrun in widRecorder
  thread.
- widRecorder - improved robustness of widRecorder to avoid some data
  loss that occured when not reading one full fragment from the OSS
  audio driver.