Description: ipv6: Use result arg in fib_lookup_arg consistently
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2211440
Notes:
 carnil> Report actually not very clear in RHBZ#2211440 as the
 carnil> additional references are closed.
 bwh> The fix is marked as fixing commit effda4dd97e8 "ipv6: Pass
 bwh> fib6_result to fib lookups" which also went into 5.2, but
 bwh> the bug seems to predate that.
Bugs:
upstream: released (5.2-rc1) [a65120bae4b7425a39c5783aa3d4fc29677eef0e]
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: needed
sid: released (5.2.6-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: needed