message: Fix Swoole\Buffer declaration.
diff: @@ -83,6 +83,9 @@ void swoole_buffer_init(int module_number)
  SWOOLE_SET_CLASS_SERIALIZABLE(swoole_buffer, zend_class_serialize_deny, zend_class_unserialize_deny);
  SWOOLE_SET_CLASS_CLONEABLE(swoole_buffer, zend_class_clone_deny);
  SWOOLE_SET_CLASS_UNSET_PROPERTY_HANDLER(swoole_buffer, zend_class_unset_property_deny);
  +
  + zend_declare_property_long(swoole_buffer_ce_ptr, ZEND_STRL("capacity"), SW_STRING_BUFFER_DEFAULT, ZEND_ACC_PUBLIC);
  + zend_declare_property_long(swoole_buffer_ce_ptr, ZEND_STRL("length"), 0, ZEND_ACC_PUBLIC);
  }
  static void swoole_buffer_recycle(swString *buffer)
  