From 2b94609ab03370c2c7916677253e1c076ac7a9a7 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Fri, 25 Oct 2024 14:54:55 -1000
Subject: [PATCH] Revert "call unbound method"

This reverts commit 521820dbbf60dae8b9487689ec5b0c21b093e5f7.
---
 aiohttp/_websocket.pyx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/aiohttp/_websocket.pyx b/aiohttp/_websocket.pyx
index 6671f1e127c..6433c8fcfc5 100644
--- a/aiohttp/_websocket.pyx
+++ b/aiohttp/_websocket.pyx
@@ -213,11 +213,11 @@ cdef class WebSocketReaderBaseCython:
                 chunk_len = buf_length - start_pos
                 if length >= chunk_len:
                     self._payload_length = length - chunk_len
-                    payload.extend(buf[start_pos:])
+                    payload += buf[start_pos:]
                     start_pos = buf_length
                 else:
                     self._payload_length = 0
-                    payload.extend(buf[start_pos : start_pos + length])
+                    payload += buf[start_pos : start_pos + length]
                     start_pos = start_pos + length
 
                 if self._payload_length != 0: