[CP] [fix] ai service guard memory leak in hybrid refresh task

Co-authored-by: footka <672528926@qq.com>

Author: 2 people

src/share/vector_index/ob_vector_index_async_task_util.cpp

@@ -548,7 +548,6 @@ int ObVecIndexAsyncTaskUtil::resume_task_from_inner_table(
                   LOG_WARN("async task ctx is null", K(ret));
                 } else if (task_result.task_type_ == ObVecIndexAsyncTaskType::OB_VECTOR_ASYNC_HYBRID_VECTOR_EMBEDDING && OB_FALSE_IT(task_ctx = new(task_ctx_buf) ObHybridVectorRefreshTaskCtx())) {
                 } else if (task_result.task_type_ != ObVecIndexAsyncTaskType::OB_VECTOR_ASYNC_HYBRID_VECTOR_EMBEDDING && OB_FALSE_IT(task_ctx = new(task_ctx_buf) ObVecIndexAsyncTaskCtx())) {
-                } else if (OB_FALSE_IT(task_ctx = new(task_ctx_buf) ObVecIndexAsyncTaskCtx())) {
                 } else if (OB_FALSE_IT(task_ctx->task_status_ = task_result)) {
                 } else if (OB_FALSE_IT(task_ctx->task_status_.tenant_id_ = tenant_id)) {
                 } else if (OB_FALSE_IT(task_ctx->task_status_.status_ = ObVecIndexAsyncTaskStatus::OB_VECTOR_ASYNC_TASK_PREPARE)) {