bpf/nat: remove unnecessary redondante nexthdr variable
bpf/nat: remove unnecessary redondante nexthdr variable

It's redondante variable that does not look to bring any value.

Signed-off-by: Sahid Orentino Ferdjaoui <f799991784850b8d4b84e1fdbe797720df9aae1a@industrialdiscipline.com>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium