message: swoole serialize fix debug mode core
diff: @@ -1207,11 +1207,15 @@ static void swoole_serialize_object(seriaString *buffer, zval *obj, size_t start
  */
  static CPINLINE zend_string * swoole_string_init(const char *str, size_t len)
  {
  +#ifdef ZEND_DEBUG
  + return zend_string_init(str, len, 0);
  +#else
  ALLOCA_FLAG(use_heap);
  zend_string *ret;
  ZSTR_ALLOCA_INIT(ret, str, len, use_heap);
  return ret;
  +#endif
  }
  /*
  @@ -1219,9 +1223,13 @@ static CPINLINE zend_string * swoole_string_init(const char *str, size_t len)
  */
  static CPINLINE void swoole_string_release(zend_string *str)
  {
  +#ifdef ZEND_DEBUG
  + zend_string_release(str);
  +#else
  //if dont support alloc 0 will ignore
  //if support alloc size is definitely < ZEND_ALLOCA_MAX_SIZE
  ZSTR_ALLOCA_FREE(str, 0);
  +#endif
  }
  static CPINLINE zend_class_entry* swoole_try_get_ce(zend_string *class_name)
  