[gnome-shell] [ShellApp] Ignore removal of windows we're not interested in

[Colin Walters <walters src gnome org>]

commit d9ff1f2ec16b7e10276c86d59f08cdf90820ee99
Author: Colin Walters <walters verbum org>
Date:   Fri Oct 23 13:15:13 2009 -0400

    [ShellApp] Ignore removal of windows we're not interested in
    
    Previously shell_app_remove_window assumed that it was being
    passed a window in its list; rather than having callers check
    whether a window is interesting and only if so removing it
    from the app, just ignore removal of windows we aren't interested
    in, like how we ignore addition of windows we already have.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=598502

 src/shell-app.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/shell-app.c b/src/shell-app.c
index 3ae3f5c..a0c56e4 100644
--- a/src/shell-app.c
+++ b/src/shell-app.c
@@ -324,6 +324,9 @@ void
 _shell_app_remove_window (ShellApp   *app,
                           MetaWindow *window)
 {
+  if (!g_slist_find (app->windows, window))
+    return;
+
   g_signal_handlers_disconnect_by_func (window, G_CALLBACK(shell_app_on_unmanaged), app);
   g_signal_handlers_disconnect_by_func (window, G_CALLBACK(shell_app_on_user_time_changed), app);
   g_object_unref (window);