feed: fix only the last configured feed being updated

We need to properly capture the feed-id for the callback function.
Defining the function inside the loop (even when copying feed.id into
a separate var beforehand) will not do this and will instead end up
being the same feed-id for all callback functions.

hotdog/command/feed.py

@@ -30,6 +30,13 @@ def make_filter(config: Mapping[str, str]) -> Callable[[feeder.Post], bool]:
     return filter
 
 
+def make_update_feed_cb(feed_id):
+    async def update_feed_cb(job: Job):
+        await update_feeds([feed_id], job)
+
+    return update_feed_cb
+
+
 def init(bot):
     bot.on_command("feed", handle)
 
@@ -63,13 +70,10 @@ def init(bot):
             every_period = feedconf.get(feed.id, {}).get("update_every")
             every_s = parse_period(every_period) if every_period else one_hour
 
-            async def update_feed_cb(job: Job):
-                await update_feeds([feed.id], job)
-
             bot.add_timer(
                 title=f"update feed: {feed.id}",
                 every=every_s,
-                callback=update_feed_cb,
+                callback=make_update_feed_cb(feed.id),
                 jitter=ten_percent * every_s,
             )