Fix UnboundLocalError in AudioProducer
==== Fixed Issues ====
====  Tech Notes ====
The variable should be declared outside the loop.
@@ -621,6 +621,7 @@ class ResponsiveRecognizer(speech_recognition.Recognizer):
ww_frames = deque(maxlen=7)
said_wake_word = False
+ audio_data = None
while (not said_wake_word and not self._stop_signaled and
not self._skip_wake_word()):
chunk = self.record_sound_chunk(source)
