Staging: otus: hpani: using the wrong variable

We're updating the "HpPriv->ani" array here so we should use that to
determine the end of the for loop.  "HpPriv->ani" has 50 elements and
"wd->regulationTable.allowChannel" has 59 elements.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>