MINOR: Add server port field to server state file.

This patch adds server ports to server state file at the end of each line
for backward compatibility.
diff --git a/src/proxy.c b/src/proxy.c
index 1481089..641d4fa 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -1458,13 +1458,13 @@
 				"%d %s %s "
 				"%d %d %d %d %ld "
 				"%d %d %d %d %d "
-				"%d %d %s"
+				"%d %d %s %u"
 				"\n",
 				px->uuid, px->id,
 				srv->puid, srv->id, srv_addr,
 				srv->state, srv->admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
 				srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
-				bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-");
+				bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port);
 		if (bi_putchk(si_ic(si), &trash) == -1) {
 			si_applet_cant_put(si);
 			return 0;