Dmitry Marakasov 3796a6d246 Switch AudioDevice to Optional
No compatibility here, as API is broken anyway (Optional<std::string>
ctor won't accept const char*)
2014-12-25 19:15:28 +03:00
..
2014-12-25 19:15:28 +03:00
2014-12-25 19:15:28 +03:00