Use `aclosing()` on all msg async-gens

piker/brokers/kraken/feed.py

@@ -28,6 +28,7 @@ from typing import (
 )
 import time
 
+from async_generator import aclosing
 from fuzzywuzzy import process as fuzzy
 import numpy as np
 import pendulum
@@ -407,17 +408,15 @@ async def stream_quotes(
         # see the tips on reconnection logic:
         # https://support.kraken.com/hc/en-us/articles/360044504011-WebSocket-API-unexpected-disconnections-from-market-data-feeds
         ws: NoBsWs
-        async with open_autorecon_ws(
-            'wss://ws.kraken.com/',
-            fixture=subscribe,
-        ) as ws:
-
+        async with (
+            open_autorecon_ws(
+                'wss://ws.kraken.com/',
+                fixture=subscribe,
+            ) as ws,
+            aclosing(process_data_feed_msgs(ws)) as msg_gen,
+        ):
             # pull a first quote and deliver
-            msg_gen = process_data_feed_msgs(ws)
-
-            # TODO: use ``anext()`` when it lands in 3.10!
             typ, ohlc_last = await anext(msg_gen)
-
             topic, quote = normalize(ohlc_last)
 
             task_status.started((init_msgs,  quote))