ip17x: fix non-debug build
PR: 278847
Reviewed by: jhibbits
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D45133
(cherry picked from commit 82f43db382cc4aea2a3f34f08da9a97ab023d5fb)
(cherry picked from commit e9a7be7def4c55fb5476c5d9540137f0ae6f9206)