Server startup fails while dropping garbage encrypted tablespace if innodb_encryption_threads > 0

diff --git a/mysql-test/suite/encryption/t/innodb-encryption-alter.test b/mysql-test/suite/encryption/t/innodb-encryption-alter.test

index d9a0e4e..2e18b15 100644

--- a/mysql-test/suite/encryption/t/innodb-encryption-alter.test

+++ b/mysql-test/suite/encryption/t/innodb-encryption-alter.test

@@ -123,6 +123,7 @@ SET DEBUG_SYNC = 'now WAIT_FOR done';

 SET GLOBAL innodb_flush_log_at_trx_commit=1;

 COMMIT;

+let $restart_parameters = --innodb_encryption_threads=2;

 --let $shutdown_timeout= 0

 --source include/restart_mysqld.inc

 disconnect con1;