[gtk: 1/2] flattenlistmodel: Fix uninitialized variable warning

[Daniel Boles <dboles src gnome org>]

commit 4ad8dcebd8d8f2f8e20ff0ff5c0bc1304406d44f
Author: Yi-Soo An <yisooan gmail com>
Date:   Thu Sep 20 12:45:33 2018 +0900

    flattenlistmodel: Fix uninitialized variable warning
    
    Variable, added, would be a garbage value if model is NULL and
    the following code, if condition, use the uninitialized variable.
    A side effect could be occurred by that.
    
    To avoid, the variable is initialized to zero.

 gtk/gtkflattenlistmodel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkflattenlistmodel.c b/gtk/gtkflattenlistmodel.c
index 3f5e83711e..b7066742b7 100644
--- a/gtk/gtkflattenlistmodel.c
+++ b/gtk/gtkflattenlistmodel.c
@@ -480,7 +480,7 @@ void
 gtk_flatten_list_model_set_model (GtkFlattenListModel *self,
                                   GListModel          *model)
 {
-  guint removed, added;
+  guint removed, added = 0;
 
   g_return_if_fail (GTK_IS_FLATTEN_LIST_MODEL (self));
   g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));