ospf: Fix OSPF API and ospf-te LSA refreshers to match recent API change

* ospf_apiserver.{c,h}: (ospf_apiserver_lsa_refresher) refreshers must now
  return the refreshed LSA.
* ospf_te.{c,h}: (ospf_mpls_te_lsa_refresh) ditto
* ospf_api.c: trivial compiler warning fix
diff --git a/ospfd/ospf_api.c b/ospfd/ospf_api.c
index 7738319..fc3b51d 100644
--- a/ospfd/ospf_api.c
+++ b/ospfd/ospf_api.c
@@ -219,7 +219,7 @@
 #else /* ORIGINAL_CODING */
   /* API message common header part. */
   zlog_debug
-    ("API-msg [%s]: type(%d),len(%d),seq(%lu),data(%p),size(%lu)",
+    ("API-msg [%s]: type(%d),len(%d),seq(%lu),data(%p),size(%zd)",
      ospf_api_typename (msg->hdr.msgtype), msg->hdr.msgtype, 
      ntohs (msg->hdr.msglen), (unsigned long) ntohl (msg->hdr.msgseq),
      STREAM_DATA (msg->s), STREAM_SIZE (msg->s));
diff --git a/ospfd/ospf_apiserver.c b/ospfd/ospf_apiserver.c
index 15fd2e5..2a9003b 100644
--- a/ospfd/ospf_apiserver.c
+++ b/ospfd/ospf_apiserver.c
@@ -1831,7 +1831,7 @@
 
 /* Periodically refresh opaque LSAs so that they do not expire in
    other routers. */
-void
+struct ospf_lsa *
 ospf_apiserver_lsa_refresher (struct ospf_lsa *lsa)
 {
   struct ospf_apiserver *apiserv;
@@ -1904,7 +1904,7 @@
     }
 
 out:
-  return;
+  return new;
 }
 
 
diff --git a/ospfd/ospf_apiserver.h b/ospfd/ospf_apiserver.h
index 9a8ae25..b60f56b 100644
--- a/ospfd/ospf_apiserver.h
+++ b/ospfd/ospf_apiserver.h
@@ -180,7 +180,7 @@
 extern void ospf_apiserver_config_write_if (struct vty *vty, struct interface *ifp);
 extern void ospf_apiserver_show_info (struct vty *vty, struct ospf_lsa *lsa);
 extern int ospf_ospf_apiserver_lsa_originator (void *arg);
-extern void ospf_apiserver_lsa_refresher (struct ospf_lsa *lsa);
+extern struct ospf_lsa *ospf_apiserver_lsa_refresher (struct ospf_lsa *lsa);
 extern void ospf_apiserver_flush_opaque_lsa (struct ospf_apiserver *apiserv,
 				      u_char lsa_type, u_char opaque_type);
 
diff --git a/ospfd/ospf_te.c b/ospfd/ospf_te.c
index c5ec0ad..24e8105 100644
--- a/ospfd/ospf_te.c
+++ b/ospfd/ospf_te.c
@@ -133,7 +133,7 @@
 static void ospf_mpls_te_config_write_if (struct vty *vty, struct interface *ifp);
 static void ospf_mpls_te_show_info (struct vty *vty, struct ospf_lsa *lsa);
 static int ospf_mpls_te_lsa_originate (void *arg);
-static void ospf_mpls_te_lsa_refresh (struct ospf_lsa *lsa);
+static struct ospf_lsa *ospf_mpls_te_lsa_refresh (struct ospf_lsa *lsa);
 static void ospf_mpls_te_lsa_schedule (struct mpls_te_link *lp, enum sched_opcode);
 
 static void del_mpls_te_link (void *val);
@@ -1009,7 +1009,7 @@
   return rc;
 }
 
-static void
+static struct ospf_lsa *
 ospf_mpls_te_lsa_refresh (struct ospf_lsa *lsa)
 {
   struct mpls_te_link *lp;
@@ -1070,7 +1070,7 @@
     }
 
 out:
-  return;
+  return new;
 }
 
 static void