tipc: remove ub->ubsock checks
Both tipc_udp_enable and tipc_udp_disable are called under rtnl_lock, ub->ubsock could never be NULL in tipc_udp_disable and cleanup_bearer, so remove the check. Also remove the one in tipc_udp_enable by adding "free" label. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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