net: remove unnecessary genlmsg_cancel() calls
the message be freed immediately, no need to trim it back to the previous size. Inspired by commit 7a9b3ec1 ("nl80211: remove unnecessary genlmsg_cancel() calls") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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