bgpd: unbreak route origin validation

[Denis Fondras]

ROV has been broken since the configuration reload changes.

Index: rde.c
===================================================================
RCS file: /cvs/src/usr.sbin/bgpd/rde.c,v
retrieving revision 1.466
diff -u -p -r1.466 rde.c
--- rde.c       13 Mar 2019 14:35:39 -0000      1.466
+++ rde.c       22 Mar 2019 15:36:41 -0000
@@ -769,7 +769,7 @@ rde_dispatch_imsg_parent(struct imsgbuf 
                                fatal(NULL);
                        SIMPLEQ_INIT(newdomains);
                        nconf = new_config();
-                       copy_config(nconf, imsg.data);
+                       memcpy(nconf, imsg.data, sizeof(struct bgpd_config));
 
                        for (rid = 0; rid < rib_size; rid++) {
                                if (!rib_valid(rid))
@@ -2899,7 +2899,7 @@ rde_reload_done(void)
        roa_old = conf->rde_roa;
        as_sets_old = conf->as_sets;
 
-       copy_config(conf, nconf);
+       memcpy(conf, nconf, sizeof(struct bgpd_config));
        SIMPLEQ_INIT(&conf->rde_prefixsets);
        SIMPLEQ_INIT(&conf->rde_originsets);
        SIMPLEQ_CONCAT(&conf->rde_prefixsets, &nconf->rde_prefixsets);