No warnings here any more.
diff --git a/isisd/isis_pdu.c b/isisd/isis_pdu.c
index 3e5154c..4bc2b54 100644
--- a/isisd/isis_pdu.c
+++ b/isisd/isis_pdu.c
@@ -1270,7 +1270,10 @@
   struct listnode *node, *node2;
   struct tlvs tlvs;
   struct list *lsp_list = NULL;
+  /* TODO: Implement SNP authentication. */
+#if 0
   struct isis_passwd *passwd;
+#endif
 
   if (snp_type == ISIS_SNP_CSNP_FLAG)
     {