fix 修复驳回删除任务可能空指针异常，调整示例状态

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/ActTaskServiceImpl.java

@@ -690,7 +690,9 @@ public class ActTaskServiceImpl implements IActTaskService {
             MultiInstanceVo multiInstance = WorkflowUtils.isMultiInstance(task.getProcessDefinitionId(), task.getTaskDefinitionKey());
             if (multiInstance == null && taskList.size() > 1) {
                 List<Task> tasks = StreamUtils.filter(taskList, e -> !e.getTaskDefinitionKey().equals(task.getTaskDefinitionKey()));
-                actHiTaskinstMapper.deleteBatchIds(StreamUtils.toList(tasks, Task::getId));
+                if (CollUtil.isNotEmpty(tasks)) {
+                    actHiTaskinstMapper.deleteBatchIds(StreamUtils.toList(tasks, Task::getId));
+                }
             }
 
 

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/TestLeaveServiceImpl.java

@@ -124,6 +124,9 @@ public class TestLeaveServiceImpl implements ITestLeaveService {
         log.info("当前任务执行了{}", processEvent.toString());
         TestLeave testLeave = baseMapper.selectById(Long.valueOf(processEvent.getBusinessKey()));
         testLeave.setStatus(processEvent.getStatus());
+        if (processEvent.isSubmit()) {
+            testLeave.setStatus(BusinessStatusEnum.WAITING.getStatus());
+        }
         baseMapper.updateById(testLeave);
     }