[baobab] end the authors list with null

[Paolo Borelli <pborelli src gnome org>]

commit b29917d57d80a225551d32eab9094fa51ac53d57
Author: Sebastien Bacher <seb128 ubuntu com>
Date:   Mon Nov 5 18:44:37 2012 +0100

    end the authors list with null
    
    Otherwise the about dialog segfaults
    (Closes: #687204)

 src/baobab-window.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/baobab-window.vala b/src/baobab-window.vala
index 018e69f..81ec163 100644
--- a/src/baobab-window.vala
+++ b/src/baobab-window.vala
@@ -319,7 +319,8 @@ namespace Baobab {
                 "Paolo Borelli <pborelli gnome com>",
                 "Stefano Facchini <stefano facchini gmail com>",
                 "BenoÃt Dejean <benoit placenet org>",
-                "Igalia (rings-chart and treemap widget) <www.igalia.com>"
+                "Igalia (rings-chart and treemap widget) <www.igalia.com>",
+                null
             };
 
             const string copyright = "Copyright \xc2\xa9 2005-2011 Fabio Marzocca, Paolo Borelli, BenoÃt Dejean, Igalia\n" +