- After implementing SCARD_AUTOALLOCATE functionality for getting card
readers name, the deletion of the allocated memory in
`PCSCLite:: HandleReaderStatusChange` was not correctly migrated and
was causing serious issues in `Windows`.
- See: https://github.com/santigimeno/node-pcsclite/issues/45.
- Use SCARD_AUTOALLOCATE if available. It avoids one extra call to
SCardListReaders.
- If it's not available handle SCARD_E_INSUFFICIENT_BUFFER error by
retrying get_card_readers.
- Avoid sending twice the same status.
- Discard SCARD_E_UNKNOWN_READER error as it's happening when the reader is
disconnected and the disconnection will be detected by the pcsclite.cpp
status thread.
- Allow up to 4 the number of times SCardCancel is called before waiting for
the status `thread` to finish.
- Destroy the mutexes and conds only in the destructors.
- Check that the thread handles are still valid before calling join on them.
Santiago Gimeno