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/warehouse/service/DocumentClassificationService.java

@@ -16,5 +16,5 @@

    boolean deleteByIds(List<Long> ids);

    List<DocumentClassificationTreeDto> selectDocumentClassificationList(DocumentClassificationDto documentClassificationDto);
    List<DocumentClassificationTreeDto> selectDocumentClassificationList();
}