fix #460 release microphone after each recording
fix #460 release microphone after each recording

gozer/voice-web,gozer/voice-web,common-voice/common-voice,gozer/voice-web,gozer/voice-web,gozer/voice-web,gozer/voice-web,common-voice/common-voice,common-voice/common-voice,common-voice/common-voice,gozer/voice-web