Fix warning. Approved by Amir.
diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c
index 9b13bca..e50f12f 100644
--- a/zebra/rt_netlink.c
+++ b/zebra/rt_netlink.c
@@ -543,7 +543,7 @@
                                                               [IFA_BROADCAST]),
                                                     buf, BUFSIZ));
       if (tb[IFA_LABEL] && strcmp (ifp->name, RTA_DATA (tb[IFA_LABEL])))
-        zlog_info ("  IFA_LABEL     %s", RTA_DATA (tb[IFA_LABEL]));
+        zlog_info ("  IFA_LABEL     %s", (char *)RTA_DATA (tb[IFA_LABEL]));
     }
   
   if (tb[IFA_ADDRESS] == NULL)