[evolution-data-server] e_collection_backend_authenticate_children: Fix a memory leak

[Milan Crha <mcrha src gnome org>]

commit 31cb56462ebb74ceb376a32334b45ad49b29a37a
Author: Milan Crha <mcrha redhat com>
Date:   Mon Mar 23 14:04:11 2015 +0100

    e_collection_backend_authenticate_children: Fix a memory leak

 libebackend/e-collection-backend.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libebackend/e-collection-backend.c b/libebackend/e-collection-backend.c
index 36c02f9..e0769c8 100644
--- a/libebackend/e-collection-backend.c
+++ b/libebackend/e-collection-backend.c
@@ -1754,6 +1754,7 @@ e_collection_backend_authenticate_children (ECollectionBackend *backend,
                }
        }
 
+       g_list_free_full (sources, g_object_unref);
        g_clear_object (&credentials_provider);
        g_clear_object (&registry_server);
 }