do not increase refcount

Author: withinboredom

Zend/zend_namespaces.c

@@ -26,7 +26,7 @@ zend_class_entry *create_namespace(zend_string *name) {
    zend_initialize_class_data(ns, 1);
    ns->type = ZEND_NAMESPACE_CLASS;
    ns->ce_flags |= ZEND_ACC_UNINSTANTIABLE;
-   ns->name = zend_string_copy(name);
+   ns->name = name;
 
    return ns;
 }