src: reduce FileHandle size by reordering fields

PR-URL: #33784
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

Author: addaleax

src/node_file.h

@@ -319,10 +319,10 @@ class FileHandle final : public AsyncWrap, public StreamBase {
   int fd_;
   bool closing_ = false;
   bool closed_ = false;
+  bool reading_ = false;
   int64_t read_offset_ = -1;
   int64_t read_length_ = -1;
 
-  bool reading_ = false;
   BaseObjectPtr<FileHandleReadWrap> current_read_;
 
   BaseObjectPtr<BindingData> binding_data_;