trx0trx.c:

  A cosmetic change: set trx id to zero at creation so that SHOW INNODB STATUS does not print a random value for the id of a transaction object for which the transaction has never been started yet (for example, running SHOW INNODB STATUS as the first command from a mysql prompt printed a random id for the trx object associated with the session itself running the SHOW INNODB STATUS command)

innobase/trx/trx0trx.c

@@ -86,6 +86,10 @@ trx_create(
 	trx->start_time = time(NULL);
 
 	trx->isolation_level = TRX_ISO_REPEATABLE_READ;
+
+	trx->id = ut_dulint_zero;
+	trx->no = ut_dulint_max;
+
 	trx->check_foreigns = TRUE;
 	trx->check_unique_secondary = TRUE;