NFSD: Pass correct buffer size to rpc_ntop

I honestly have no idea where I got 129 from, but it's a much bigger
value than the actual buffer size (INET6_ADDRSTRLEN).

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 3d27f08..8e25551 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4623,7 +4623,7 @@
 u64 nfsd_print_client(struct nfs4_client *clp, u64 num)
 {
 	char buf[INET6_ADDRSTRLEN];
-	rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, 129);
+	rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf));
 	printk(KERN_INFO "NFS Client: %s\n", buf);
 	return 1;
 }
@@ -4632,7 +4632,7 @@
 			     const char *type)
 {
 	char buf[INET6_ADDRSTRLEN];
-	rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, 129);
+	rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf));
 	printk(KERN_INFO "NFS Client: %s has %u %s\n", buf, count, type);
 }