/*
                 * Loop until a valid update from a different transaction is found in the update
                 * list.
                 */
                while (upd->next != NULL) {
                    if (upd->next->txnid == WT_TXN_ABORTED)
                        upd = upd->next;
                    else if (upd->next->txnid != WT_TXN_NONE &&
                      tombstone->txnid == upd->next->txnid) {
                        upd = upd->next;
                        /* Save the latest update from the same transaction. */
                        if (same_txn_valid_upd == NULL)
                            same_txn_valid_upd = upd;
                    } else
                        break;
                }