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/AccountIncomeService.java

@@ -20,4 +20,6 @@
    List<AccountDto3> reportIncome();

    AccountIncome getByInvoiceNumber(String purchaseContractNumber);

    List<AccountIncome> getByInvoiceNumberList(String purchaseContractNumber);
}