net/ipv6: Make ipv6_route_table_template static

ipv6_route_table_template is exported but there are no users outside
of route.c. Make it static.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ipv6.h

@@ -1089,8 +1089,6 @@ static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
 #endif
 
 #ifdef CONFIG_SYSCTL
-extern struct ctl_table ipv6_route_table_template[];
-
 struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
 struct ctl_table *ipv6_route_sysctl_init(struct net *net);
 int ipv6_sysctl_register(void);

net/ipv6/route.c

@@ -5031,7 +5031,7 @@ int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
 	return 0;
 }
 
-struct ctl_table ipv6_route_table_template[] = {
+static struct ctl_table ipv6_route_table_template[] = {
 	{
 		.procname	=	"flush",
 		.data		=	&init_net.ipv6.sysctl.flush_delay,