[IPV6]: Reorg struct ifmcaddr6 to save some bytes

/home/acme/git/net-2.6/net/ipv6/mcast.c:
  struct ifmcaddr6 |   -8
 1 struct changed
  igmp6_group_dropped  |   -6
  add_grec             |   -3
  mld_ifc_timer_expire |  -18
  ip6_mc_add_src       |   -3
  ip6_mc_del_src       |   -3
  igmp6_group_added    |   -3
 6 functions changed, 36 bytes removed, diff: -36

ipv6.ko:
 6 functions changed, 36 bytes removed, diff: -36

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/if_inet6.h

@@ -112,13 +112,13 @@ struct ifmcaddr6
 	struct ip6_sf_list	*mca_sources;
 	struct ip6_sf_list	*mca_tomb;
 	unsigned int		mca_sfmode;
+	unsigned char		mca_crcount;
 	unsigned long		mca_sfcount[2];
 	struct timer_list	mca_timer;
 	unsigned		mca_flags;
 	int			mca_users;
 	atomic_t		mca_refcnt;
 	spinlock_t		mca_lock;
-	unsigned char		mca_crcount;
 	unsigned long		mca_cstamp;
 	unsigned long		mca_tstamp;
 };