netlink: don't bug on unknown events

We will likely have new ones in the future, silently skip them. If the
user wants to see them, it just needs to upgrade.

This is currently causing us problems with kernels that deliver the
generation counter event.

term1# nft add table test

term2# nft monitor
nft: netlink.c:2063: netlink_events_cb: Assertion `0' failed.
Aborted

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions