Mark Johnston 56707bee4b ipfw(8): Fix most warnings with the default WARNS level.
- Add missing const and static qualifiers.
- Avoid shadowing the global "co" by renaming it to "g_co".
- Avoid mixing signedness in loop bound checks.
- Leave -Wcast-align warnings disabled for now.

Reviewed by:	ae, melifaro
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D25456
2020-07-13 17:51:04 +00:00
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