Fix local bridges being disconnected on SIGHUP.

Closes #1942. Thanks to charlemagnelasse.

ChangeLog.txt

@@ -2,6 +2,8 @@ Broker:
 - Fix crash on Windows if loading a plugin fails. Closes #1866.
 - Fix DH group not being set for TLS connections, which meant ciphers using
   DHE couldn't be used. Closes #1925. Closes #1476.
+- Fix local bridges being disconnected on SIGHUP. Closes #1942.
+
 
 - Fix listener not being reassociated with client when reloading a persistence
   file and `per_listener_settings true` is set and the client did not set a

src/security_default.c

@@ -1025,6 +1025,10 @@ int mosquitto_security_apply_default(struct mosquitto_db *db)
 #endif
 
 	HASH_ITER(hh_id, db->contexts_by_id, context, ctxt_tmp){
+		if(context->bridge){
+			continue;
+		}
+
 		/* Check for anonymous clients when allow_anonymous is false */
 		if(db->config->per_listener_settings){
 			if(context->listener){