netfilter: xt_LOG: don't use xchg() for simple assignment
At least on ia64 the (bogus) use of xchg() here results in the compiler warning about an unused expression result. As only an assignment is intended here, convert it to such. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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