ipfw: fix copy&paste bug for number:array tables
Use compare_numarray() method for binary search. This fixes
table lookups for keys greater than UINT16_MAX.
Obtained from: Yandex LLC
MFC after: 1 week
Sponsored by: Yandex LLC
(cherry picked from commit 194df014feebd8b169b41ecd75ae73d63a792d6b)