From 024df4f3afd30a1c1108b50a03b6a955aff2d1b1 Mon Sep 17 00:00:00 2001
From: "Adam D. Barratt" <adam@adam-barratt.org.uk>
Date: Sun, 17 Mar 2013 10:33:59 +0000
Subject: [PATCH] same_source: handle being passed "None" as a version

Although this should never happen, rather than crashing if one of the
versions is none, simply indicate that they are unequal.

Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>
---
 britney.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/britney.py b/britney.py
index 252f722..59ae2a6 100755
--- a/britney.py
+++ b/britney.py
@@ -988,6 +988,9 @@ class Britney(object):
         if sv1 == sv2:
             return 1
 
+        if sv1 is None or sv2 is None:
+            return 0
+
         m = re.match(r'^(.*)\+b\d+$', sv1)
         if m: sv1 = m.group(1)
         m = re.match(r'^(.*)\+b\d+$', sv2)