From d2ce692f67ce00352b3e5cd0d1a886066cc9f55d Mon Sep 17 00:00:00 2001
From: wiredfool <eric-github@soroos.net>
Date: Tue, 13 Jun 2017 22:35:12 +0100
Subject: [PATCH] Use code for unknown error when initializing.

Any case where we hit the cleanup without otherwise setting err_code is some sort of caught error that we're not considering. May not be possible anymore
---
 PIL/ImageFile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PIL/ImageFile.py b/PIL/ImageFile.py
index 0c7a19194..9ada2f6db 100644
--- a/PIL/ImageFile.py
+++ b/PIL/ImageFile.py
@@ -178,7 +178,7 @@ class ImageFile(Image.Image):
                     self.map = None
 
         self.load_prepare()
-        err_code = 0
+        err_code = -3 # initialize to unknown error
         if not self.map:
             # sort tiles in file order
             self.tile.sort(key=_tilesort)