[IPV6] NDISC: Fix setting base_reachable_time_ms variable.

This bug was introduced by the commit
d12af679bcf8995a237560bdf7a4d734f8df5dbb (sysctl: fix neighbour table
sysctls).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 20cfc90..36f7dbf 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1670,7 +1670,7 @@
 					    filp, buffer, lenp, ppos);
 
 	else if ((strcmp(ctl->procname, "retrans_time_ms") == 0) ||
-		 (strcmp(ctl->procname, "base_reacable_time_ms") == 0))
+		 (strcmp(ctl->procname, "base_reachable_time_ms") == 0))
 		ret = proc_dointvec_ms_jiffies(ctl, write,
 					       filp, buffer, lenp, ppos);
 	else