fix(approve): 修复审批流程为空时的异常处理

liyong

2026-04-30 c2ad2126d6f8423e0a5e6e20bbb91ef6bb1cffc0

 src/main/java/com/ruoyi/sales/service/impl/SalesLedgerServiceImpl.java

@@ -479,6 +479,8 @@
                        .eq(ShippingInfo::getSalesLedgerProductId, product.getId())
                        .orderByDesc(ShippingInfo::getCreateTime)
                        .last("limit 1"));
                product.setShippingCarNumber(shippingInfo.getShippingCarNumber());
                product.setShippingDate(shippingInfo.getShippingDate());
                if (shippingInfo != null) {
                    product.setShippingStatus(shippingInfo.getStatus());
                }