sctp: remove unused var from sctp_process_asconf

Assigned but not used.
Signed-off-by: NMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Reviewed-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sctp/sm_make_chunk.c

@@ -3210,7 +3210,6 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
 	union sctp_params param;
 	sctp_addiphdr_t		*hdr;
 	union sctp_addr_param	*addr_param;
-	sctp_addip_param_t	*asconf_param;
 	struct sctp_chunk	*asconf_ack;
 	__be16	err_code;
 	int	length = 0;
@@ -3230,7 +3229,6 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
 	 * asconf parameter.
 	 */
 	length = ntohs(addr_param->p.length);
-	asconf_param = (void *)addr_param + length;
 	chunk_len -= length;
 
 	/* create an ASCONF_ACK chunk.