# HG changeset patch
# User Denis Laxalde <denis.laxalde@logilab.fr>
# Date 1420644147 -3600
# Node ID 2eb06486273a2bedc3dd9c7b43829910178cf8ad
# Parent  f4a4556f23da8034d66d718466b3d18b625611a9
[datafeed] Set headers parameter to an empty dict in DataFeedParser.retrieve_url

This parameter is then passed to urllib2.Request, which expects a dict and
won't check for None.

Closes #4842333.

diff -r f4a4556f23da -r 2eb06486273a server/sources/datafeed.py
--- a/server/sources/datafeed.py	Thu Jan 22 10:43:24 2015 +0100
+++ b/server/sources/datafeed.py	Wed Jan 07 16:22:27 2015 +0100
@@ -319,6 +319,8 @@
         * handle file:// URL
         * other will be considered as plain content, useful for testing purpose
         """
+        if headers is None:
+            headers = {}
         if url.startswith('http'):
             url = self.normalize_url(url)
             if data: