[master] fix defer release txdesc's ref in tx-timer

src/storage/tx/ob_trans_timer.cpp

@@ -158,7 +158,8 @@ void ObTxTimeoutTask::runTimerTask()
     // because the handle_tx_commit_timeout may cause tx terminate
     // its execution and release all resource include current object
     // it is unsafe to use any member field after call handle func.
-    DEFER_C({ txs_->release_tx_ref(*tx_desc_); });
+    auto txs = txs_; auto tx_desc = tx_desc_;
+    DEFER({ txs->release_tx_ref(*tx_desc); });
     if (tx_desc_->is_xa_trans()) {
       if (OB_FAIL(txs_->handle_timeout_for_xa(*tx_desc_, delay_))) {
         TRANS_LOG(WARN, "fail to handle timeout", K(ret), KPC_(tx_desc));