fix: 发货审核异常未回滚导致的脏数据，添加判空操作

gongchunyi

昨天 2aa97d1237b7f720b33f9952f9901ddf7ae9833a

 src/main/java/com/ruoyi/production/service/impl/ProductWorkOrderServiceImpl.java

@@ -24,4 +24,9 @@
        return productWorkOrdermapper.pageProductWorkOrder(page, productWorkOrder);
    }

    @Override
    public int updateProductWorkOrder(ProductWorkOrderDto productWorkOrderDto) {
        return productWorkOrdermapper.updateById(productWorkOrderDto);
    }

}