Only write out one blank line before the request data.
This closes SF patch #419459.
diff --git a/Lib/urllib2.py b/Lib/urllib2.py
index 992c83b..ee0bc27 100644
--- a/Lib/urllib2.py
+++ b/Lib/urllib2.py
@@ -809,7 +809,7 @@
             h.putheader(k, v)
         h.endheaders()
         if req.has_data():
-            h.send(data + '\r\n')
+            h.send(data)
 
         code, msg, hdrs = h.getreply()
         fp = h.getfile()