fix(基础平台之微信服务): 修复微信端不显示总余额的问题

ruoyi-modules/ruoyi-backstage/src/main/java/org/dromara/backstage/payment/service/impl/PtBagServiceImpl.java

@@ -305,8 +305,8 @@ public class PtBagServiceImpl implements IPtBagService {
         queryWrapper.select(PtBag::getBalance,PtBag::getUserId);
         List<PtBagVo> listVo = baseMapper.selectVoList(queryWrapper);
         BigDecimal amount = BigDecimal.ZERO;
-        for (int i = 0,j=listVo.size(); i < j; i++) {
-            amount = amount.add(listVo.get(i).getBalance());
+        for (PtBagVo ptBagVo : listVo) {
+            amount = amount.add(ptBagVo.getBalance());
         }
         return amount;
     }