MDEV-35810 test case fixup

A KILL QUERY of SET GLOBAL innodb_log_file_size would sometimes lead to
ER_QUERY_INTERRUPTED being reported.

Author: dr-m

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

@@ -43,6 +43,7 @@ send SET GLOBAL innodb_log_file_size=7340032;
 let $ignore= `SELECT @id := $ID`;
 KILL QUERY @id;
 --connection con1
+--error 0,ER_QUERY_INTERRUPTED
 reap;
 
 --connection default