fix(raspi): Proper closing of stream

fixes #666

Author: ehdsouza

examples/microphone-speech-to-text.py

@@ -122,7 +122,7 @@ def pyaudio_callback(in_data, frame_count, time_info, status):
         pass
 except KeyboardInterrupt:
     # stop recording
-    audio_source.completed_recording()
     stream.stop_stream()
     stream.close()
     audio.terminate()
+    audio_source.completed_recording()