MDEV-10887: innodb.innodb_stats_fetch_nonexistent fails in buildbot on Windows

Problem was that test innodb.innodb_stats_fetch_corrupted will post
a error InnoDB: Error: Table "mysql"."innodb_index_stats" not found
to a error log and test ignores that message. However, following tests
might see this error also and they might not ignore this error.
Force a server restart after innodb.innodb_stats_fetch_corrupted
to get clean log.

mysql-test/suite/innodb/t/innodb_stats_fetch_corrupted.test

@@ -7,6 +7,8 @@
 # functionality tested here is not related to the page size, so we only
 # test with 16k page size.
 -- source include/have_innodb_16k.inc
+# server restart
+-- source include/not_embedded.inc
 
 call mtr.add_suppression("InnoDB: Error: Table \"mysql\".\"innodb_index_stats\" not found");
 call mtr.add_suppression("InnoDB: Error: Fetch of persistent statistics requested for table");
@@ -43,3 +45,6 @@ FROM information_schema.tables WHERE table_name = 'test_ps_fetch_corrupted';
 ALTER TABLE mysql.innodb_index_stats_ RENAME TO mysql.innodb_index_stats;
 
 DROP TABLE test_ps_fetch_corrupted;
+
+# force server restart to clean up log from above error
+--source include/restart_mysqld.inc