[netspeed] Disconnect "changed" on icon theme upon destruction; Fixes #600579

[Jörgen Scheibengruber <mfcn src gnome org>]

commit dfe9496a0da12f092043e0c90e3b5f6237f678af
Author: Jörgen Scheibengruber <mfcn gmx de>
Date:   Sat Jun 5 15:25:44 2010 +0300

    Disconnect "changed" on icon theme upon destruction; Fixes #600579

 src/netspeed.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/netspeed.c b/src/netspeed.c
index cbb77e0..96008ec 100644
--- a/src/netspeed.c
+++ b/src/netspeed.c
@@ -1413,8 +1413,14 @@ applet_button_press(GtkWidget *widget, GdkEventButton *event, NetspeedApplet *ap
 static void
 applet_destroy(PanelApplet *applet_widget, NetspeedApplet *applet)
 {
+	GtkIconTheme *icon_theme;
+	
 	g_assert(applet);
 	
+	icon_theme = gtk_icon_theme_get_default();
+	g_object_disconnect(G_OBJECT(icon_theme), "changed",
+			G_CALLBACK(icon_theme_changed_cb), (gpointer)applet,
+			NULL);
 	g_source_remove(applet->timeout_id);
 	applet->timeout_id = 0;