netfilter: conntrack: __nf_ct_l4proto_find() always returns valid pointer

Remove unnecessary check for non-nul pointer in destroy_conntrack()
given that __nf_ct_l4proto_find() returns the generic protocol tracker
if the protocol is not supported.

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

diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index e3787cf..f72ede1 100644 (file)
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -363,7 +363,7 @@ destroy_conntrack(struct nf_conntrack *nfct)
        }
        rcu_read_lock();
        l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
-       if (l4proto && l4proto->destroy)
+       if (l4proto->destroy)
                l4proto->destroy(ct);
 
        rcu_read_unlock();