Fix a few places that broke due to a recent change to io.py.
diff --git a/Lib/urllib2.py b/Lib/urllib2.py
index 658bc3d..1defbe9 100644
--- a/Lib/urllib2.py
+++ b/Lib/urllib2.py
@@ -1079,6 +1079,8 @@
         # Add some fake methods to the reader to satisfy BufferedReader.
         r.readable = lambda: True
         r.writable = r.seekable = lambda: False
+        r._checkReadable = lambda: True
+        r._checkWritable = lambda: False
         fp = io.BufferedReader(r)
 
         resp = addinfourl(fp, r.msg, req.get_full_url())