fix locking

weed/mq/kafka/integration/broker_client_subscribe.go

@@ -435,8 +435,8 @@ func (bc *BrokerClient) ReadRecordsFromOffset(ctx context.Context, session *Brok
 	// - Exact match (requestedOffset == session.StartOffset)
 	// - Reading ahead (requestedOffset > session.StartOffset, e.g., from cache)
 	glog.V(2).Infof("[FETCH] Using persistent session: requested=%d session=%d (persistent connection)",
-		requestedOffset, session.StartOffset)
-	session.mu.Unlock()
+		requestedOffset, currentStartOffset)
+	// Note: session.mu was already unlocked at line 294 after reading currentStartOffset
 	return bc.ReadRecords(ctx, session, maxRecords)
 }