MTR's internal check of the test case 'main.events_trans' failed.

fix: DROP EVENT e1;

mysql-test/r/events_trans.result

@@ -135,3 +135,4 @@ SELECT * FROM t2;
 a
 ROLLBACK WORK TO SAVEPOINT A;
 DROP TABLE t1, t2;
+DROP EVENT e1;

mysql-test/t/events_trans.test

@@ -146,3 +146,4 @@ SELECT * FROM t2;
 ROLLBACK WORK TO SAVEPOINT A;
 
 DROP TABLE t1, t2;
+DROP EVENT e1;