[gtk+] treeview: fix an uninitialised variable warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit 13f570648831459f4643376fb6f8c522cc362be2
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Dec 20 11:41:35 2011 +0100

    treeview: fix an uninitialised variable warning

 gtk/gtktreeview.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 59774be..583195b 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -12922,6 +12922,8 @@ gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
       cursor_changed = (node->children == tree_view->priv->cursor_tree)
                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
     }
+  else
+    cursor_changed = FALSE;
 
   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
     {