Fix the bind2.test test script so that it works even if

SQLITE_ENABLE_PREUPDATE_HOOK is not defined.
Fix for test-case breakage from check-in [c006515ae6faff65].

FossilOrigin-Name: 937d3a45b3fef354dbdea2085fbb7d9c752a96e8ebb62f61931deb5a64132946