Merge lp:~stefanor/pylibravatar/no-server into lp:pylibravatar

[Stefano Rivera]

Ran into this while hacking on a project using libravatar, on a plane.

Sometimes you don't have DNS servers available :)

[François Marier (fmarier)]

Good idea, thanks for submitting a patch!

review: Approve

=== modified file 'libravatar.py'
--- libravatar.py	2015-08-02 18:20:02 +0000
+++ libravatar.py	2016-02-07 10:01:46 +0000
@@ -160,6 +160,10 @@
         print("DNS Error: %s" % message)
         return None
 
+    if dns_request is None:
+        # No servers discovered?
+        return None
+
     if 'NXDOMAIN' == dns_request.header['status']:
         # Not an error, but no point in going any further
         return None