[lxpanel] Add missing patch

[Christoph Wickert]

commit 5f1be2afdb3d1f9456e729507b93bd1a9b059f52
Author: Christoph Wickert <cwickert at fedoraproject.org>
Date:   Sun May 12 23:55:58 2013 +0200

    Add missing patch

 lxpanel-0.5.12-fix-flash_window_timeout.patch |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/lxpanel-0.5.12-fix-flash_window_timeout.patch b/lxpanel-0.5.12-fix-flash_window_timeout.patch
new file mode 100644
index 0000000..39fd558
--- /dev/null
+++ b/lxpanel-0.5.12-fix-flash_window_timeout.patch
@@ -0,0 +1,20 @@
+commit c63263428d7669b5ed617103c1377c2a6b3ff218
+Author: Henry Gebhardt <hsggebhardt at googlemail.com>
+Date:   Mon Apr 22 20:34:42 2013 -0400
+
+    taskbar: fix "flash_window_timeout" bug ID 3573069
+    
+    Thanks to Bastiaan Jacques.
+
+diff --git a/src/plugins/taskbar.c b/src/plugins/taskbar.c
+index 83ed640..8fe6081 100644
+--- a/src/plugins/taskbar.c
++++ b/src/plugins/taskbar.c
+@@ -197,6 +197,7 @@ static void taskbar_panel_configuration_changed(Plugin * p);
+ static void set_timer_on_task(Task * tk)
+ {
+     gint interval;
++    g_return_if_fail(tk->flash_timeout == 0);
+     g_object_get(gtk_widget_get_settings(tk->button), "gtk-cursor-blink-time", &interval, NULL);
+     tk->flash_timeout = g_timeout_add(interval, (GSourceFunc) flash_window_timeout, tk);
+ }