fix missing parent_table NULL check

Author: JeremiahM37

src/routes.c

@@ -2961,6 +2961,10 @@ static wolfsentry_errcode_t wolfsentry_route_event_dispatch_by_route_1(
             WOLFSENTRY_ERROR_RERETURN(ret);
     }
 
+    if (route->header.parent_table == NULL) {
+        ret = WOLFSENTRY_ERROR_ENCODE(INTERNAL_CHECK_FATAL);
+        goto out;
+    }
     if (route->header.parent_table->ent_type != WOLFSENTRY_OBJECT_TYPE_ROUTE) {
         ret = WOLFSENTRY_ERROR_ENCODE(WRONG_OBJECT);
         goto out;