Pablo Neira Ayuso 5e91c9d9cd netfilter: nft_osf: check if attribute is present
If the attribute is not sent, eg. old libnftnl binary, then
tb[NFTA_OSF_TTL] is NULL and kernel crashes from the _init path.

Fixes: a218dc82f0b5 ("netfilter: nft_osf: Add ttl option support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-25 10:18:31 +02:00
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