free moved tasks and executed tasks (#3578)

Signed-off-by: NWang Xiangyu <xy.wang@zilliz.com>

core/src/scheduler/resource/Resource.cpp

@@ -174,7 +174,7 @@ Resource::loader_function() {
             task_item->Loaded();
             if (task_item->from) {
                 task_item->from->Moved();
-                //                task_item->from->task = FinishedTask::Create();
+                task_item->from->task = FinishedTask::Create(task_item->from->task);
                 task_item->from = nullptr;
             }
             if (subscriber_) {
@@ -204,7 +204,7 @@ Resource::executor_function() {
             }
             auto start = get_current_timestamp();
             Process(task_item->task);
-            //            task_item->task = FinishedTask::Create();
+            task_item->task = FinishedTask::Create(task_item->task);
             auto finish = get_current_timestamp();
             ++total_task_;
             total_cost_ += finish - start;