Split update_myseqno into its own function.

message.c

@@ -639,13 +639,20 @@ send_update(struct network *net, int urgent,
 }
 
 void
-send_self_update(struct network *net, int force_seqno)
+update_myseqno(int force)
 {
-    int i;
-    if(force_seqno || seqno_time + seqno_interval < now.tv_sec) {
+    if(force || seqno_time + seqno_interval < now.tv_sec) {
         myseqno = seqno_plus(myseqno, 1);
         seqno_time = now.tv_sec;
     }
+}
+
+void
+send_self_update(struct network *net, int force_seqno)
+{
+    int i;
+
+    update_myseqno(force_seqno);
 
     if(net == NULL) {
         for(i = 0; i < numnets; i++)

message.h

@@ -51,6 +51,7 @@ void send_unicast_request(struct neighbour *neigh,
                           unsigned short router_hash);
 void send_update(struct network *net, int urgent,
                  const unsigned char *prefix, unsigned char plen);
+void update_myseqno(int force);
 void send_self_update(struct network *net, int force_seqno);
 void send_self_retract(struct network *net);
 void send_neighbour_update(struct neighbour *neigh, struct network *net);