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/account/service/AccountExpenseService.java

@@ -27,4 +27,6 @@
    Map<String,List<String>> analysis();

    AccountExpense getByInvoiceNumber(String purchaseContractNumber);

    List<AccountExpense> getByInvoiceNumberList(String purchaseContractNumber);
}