Fix the failing innodb-index test by adjusting the result to a new
MySQL behavior. The author of the behavioral change
Davi Arnaut <davi@mysql.com>, BZR-r2667:
http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.1/revision/davi%40mysql.com-20080617141221-8yre8ys9j4uw3xx5?start_revid=joerg%40mysql.com-20080630105418-7qoe5ehomgrcdb89
has been asked if this change is intended:
http://lists.mysql.com/internals/35805

Regardless of the answer we need to adjust to the new behavior to get
the test to succeed. If they switch back, then we will revert this commit.