From 8a73c6c90c5984292d39a0a9d4be86e792d81cb4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adri=C3=A1n=20Chaves?= <adrian@chaves.io>
Date: Fri, 24 Nov 2023 10:25:01 +0100
Subject: [PATCH] Fix HttpCompressionMiddleware backward compatibility

---
 scrapy/downloadermiddlewares/httpcompression.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scrapy/downloadermiddlewares/httpcompression.py b/scrapy/downloadermiddlewares/httpcompression.py
index 1a3f6962a..58ca1017f 100644
--- a/scrapy/downloadermiddlewares/httpcompression.py
+++ b/scrapy/downloadermiddlewares/httpcompression.py
@@ -39,8 +39,9 @@ class HttpCompressionMiddleware:
 
     def __init__(self, stats=None, *, crawler=None):
         if not crawler:
-            if stats:
-                self.stats = stats
+            self.stats = stats
+            self._max_size = 1073741824
+            self._warn_size = 33554432
             return
         self.stats = crawler.stats
         self._max_size = crawler.settings.getint("DOWNLOAD_MAXSIZE")