bug fix

src/main/java/cn/efunbox/audio/impl/hag/HagProductServiceImpl.java

@@ -57,6 +57,7 @@ public class HagProductServiceImpl implements HagProductService {
         if (count == 0) {
             pagination.setNext("0");
             hagProductResp.setPagination(pagination);
+            hagProductResp.setContentItems(new ArrayList<>());
             return hagProductResp;
         }