Fixed reference to incorrect variable if unknown host configured crash.

* Fixed a LOG_ERROR message referencing the config variable list v that
had previously been processed and became NULL.

* Added error return value set that was missing in an ast_append_ha()
error return path.

(closes issue ASTERISK-18743)
Reported by: Michele
Patches:
      issueA18743-fix_dynamic_exclude_static_bad_host_log.patch (license #5674) patch uploaded by Walter Doekes
Tested by: Michele
........

Merged revisions 343851 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 343852 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@343853 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -28119,11 +28119,11 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, str
 		ast_string_field_set(peer, tohost, srvlookup);
 
 		if (global_dynamic_exclude_static) {
-			int err = 0;
+			int ha_error = 0;
 			sip_cfg.contact_ha = ast_append_ha("deny", ast_sockaddr_stringify_addr(&peer->addr), 
-							sip_cfg.contact_ha, &err);
-			if (err) {
-				ast_log(LOG_ERROR, "Bad ACL entry in configuration line %d : %s\n", v->lineno, v->value);
+							sip_cfg.contact_ha, &ha_error);
+			if (ha_error) {
+				ast_log(LOG_ERROR, "Bad or unresolved host/IP entry in configuration for peer %s, cannot add to contact ACL\n", peer->name);
 			}
 		}
 	} else if (peer->dnsmgr && !peer->host_dynamic) {

main/acl.c

@@ -408,6 +408,9 @@ struct ast_ha *ast_append_ha(const char *sense, const char *stuff, struct ast_ha
 	}
 
 	if (!(ha = ast_calloc(1, sizeof(*ha)))) {
+		if (error) {
+			*error = 1;
+		}
 		return ret;
 	}