[folks] bluez: Ignore missing sessions when removing sessions

[Philip Withnall <pwithnall src gnome org>]

commit 89ba19db4f6532afaf30944deba6a5f188695e9c
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Thu Apr 3 14:42:38 2014 +0100

    bluez: Ignore missing sessions when removing sessions
    
    This occasionally happens when running the unit tests. The check only
    applies to unit tests, so will have no effect in production use.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726973

 backends/bluez/bluez-persona-store.vala |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/backends/bluez/bluez-persona-store.vala b/backends/bluez/bluez-persona-store.vala
index 7326218..4defe99 100644
--- a/backends/bluez/bluez-persona-store.vala
+++ b/backends/bluez/bluez-persona-store.vala
@@ -539,9 +539,18 @@ public class Folks.Backends.BlueZ.PersonaStore : Folks.PersonaStore
         }
       catch (IOError ie)
         {
-          /* Ignore errors from closing or cancelling. */
+          /* Ignore errors from closing or cancelling, or if the session has
+           * disappeared already. */
           if (ie is IOError.CLOSED || ie is IOError.CANCELLED)
               return;
+          if (ie is IOError.DBUS_ERROR &&
+              ie.message.has_prefix ("GDBus.Error:org.freedesktop.DBus." +
+                                     "Python.dbus.exceptions.DBusException: " +
+                                     "('org.freedesktop.DBus.Mock.NameError'"))
+            {
+              /* Only used in unit tests. */
+              return;
+            }
 
           warning ("Couldn’t remove OBEX session ‘%s’: %s",
               session_path, ie.message);