[gtk+] treeview: Ensure selection's changed signal

[Benjamin Otte <otte src gnome org>]

commit 92929b968bd479e237b8f6dc1686ca953f4d8c5d
Author: Benjamin Otte <otte redhat com>
Date:   Sat Dec 10 07:54:34 2011 +0100

    treeview: Ensure selection's changed signal
    
    There was a corner case where the changed signal was not emitted.
    If rows were built like this:
      1    (not selected)
      + 2  (selected)
      + 3  (not selected)
    And row 1 was removed, no signal would be emitted.
    
    I like it when writing tests actually finds bugs that have been around
    since 2003 - introduced by 4a03ea2334bde7d2e15d0933c5a78f5a2338a854
    actually. :)

 gtk/gtktreeview.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 2c3b00a..d0baa45 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -8967,7 +8967,7 @@ check_selection_helper (GtkRBTree *tree,
 {
   gint *value = (gint *)data;
 
-  *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
+  *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
 
   if (node->children && !*value)
     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);