Merge lp:~kiwinote/software-center/bug905605 into lp:software-center

[Kiwinote]

this is a consequence of http://git.gnome.org/browse/pygobject/commit/gi/overrides/Gtk.py?id=654711d0f940d7480d0f1cdb25a3dc9996f7a706
although that commit breaks existing applications the change isn't incorrect in the sense that we do declare the column type as a string so we should really ensure that we only put strings in (which is what i've done here)

=== modified file 'debian/changelog'
--- debian/changelog	2011-12-19 13:12:41 +0000
+++ debian/changelog	2012-01-02 15:12:26 +0000
@@ -1,3 +1,10 @@
+software-center (5.1.5) UNRELEASED; urgency=low
+
+  * softwarecenter/ui/gtk3/widgets/oneconfviews.py:
+    - ensure that hostid is always a string (as we declared) (LP: #905605)
+
+ -- Kiwinote <[e-mail]>  Mon, 02 Jan 2012 15:03:47 +0000
+
 software-center (5.1.4) precise; urgency=low
 
   [ Michael Vogt ]
 
=== modified file 'softwarecenter/ui/gtk3/widgets/oneconfviews.py'
--- softwarecenter/ui/gtk3/widgets/oneconfviews.py	2011-09-02 03:53:36 +0000
+++ softwarecenter/ui/gtk3/widgets/oneconfviews.py	2012-01-02 15:12:26 +0000
@@ -67,6 +67,7 @@
             return
         if hostid in self.hostids:
             return
+        hostid = hostid or ''  # bug 905605
         self.hostids.append(hostid)
         LOG.debug("register new computer: %s, %s" % (hostname, hostid))
         model.append([self.default_computer_icon, hostid, hostname])