From d4604bb62b2e9d5fd2dacf0958992755fa822037 Mon Sep 17 00:00:00 2001
From: Eric Soroos <eric-github@soroos.net>
Date: Wed, 3 Jan 2018 10:41:36 +0000
Subject: [PATCH] Remove case for when _imaging module is not present

---
 src/PIL/PngImagePlugin.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/PIL/PngImagePlugin.py b/src/PIL/PngImagePlugin.py
index 2031b179e..51e5ad768 100644
--- a/src/PIL/PngImagePlugin.py
+++ b/src/PIL/PngImagePlugin.py
@@ -92,13 +92,9 @@ def _safe_zlib_decompress(s):
 class ChunkStream(object):
 
     def __init__(self, fp):
-
         self.fp = fp
         self.queue = []
 
-        if not hasattr(Image.core, "crc32"):
-            self.crc = self.crc_skip
-
     def read(self):
         "Fetch a new chunk. Returns header information."
         cid = None
@@ -160,7 +156,7 @@ class ChunkStream(object):
         "Read checksum.  Used if the C module is not present"
 
         self.fp.read(4)
-
+        
     def verify(self, endchunk=b"IEND"):
 
         # Simple approach; just calculate checksum for all remaining