Merge "google-assistant-sdk/audio_helpers: fix generator termination"

Author: proppy

google-assistant-sdk/googlesamples/assistant/grpc/audio_helpers.py

@@ -335,7 +335,7 @@ def __iter__(self):
         """Returns a generator reading data from the stream."""
         while True:
             if self._stop_recording.is_set():
-                raise StopIteration
+                return
             yield self.read(self._iter_size)
 
     @property