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/fault_inject.c b/fs/nfsd/fault_inject.c
index 96ffdf5..7a7b079 100644
--- a/fs/nfsd/fault_inject.c
+++ b/fs/nfsd/fault_inject.c
@@ -79,7 +79,7 @@
 	clp = nfsd_find_client(addr, addr_size);
 	if (clp) {
 		count = op->forget(clp, 0);
-		rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, 129);
+		rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf));
 		printk(KERN_INFO "NFSD [%s]: Client %s had %llu state object(s)\n", op->file, buf, count);
 	}
 	nfs4_unlock_state();