From ca85b0da241b88bd239bdbe7e8317e7a1f4ceebc Mon Sep 17 00:00:00 2001
From: Hugo <hugovk@users.noreply.github.com>
Date: Wed, 1 Apr 2020 22:17:39 +0300
Subject: [PATCH] Initialise __frame = 0

---
 src/PIL/PngImagePlugin.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/PIL/PngImagePlugin.py b/src/PIL/PngImagePlugin.py
index 81a9e36af..2c51caf47 100644
--- a/src/PIL/PngImagePlugin.py
+++ b/src/PIL/PngImagePlugin.py
@@ -630,6 +630,7 @@ class PngImageFile(ImageFile.ImageFile):
 
     format = "PNG"
     format_description = "Portable network graphics"
+    __frame = 0
 
     def _open(self):