gdkwindow-x11: Ensure that extended update counter is freed

I believe this lead to rampant leakage of SyncCounters by
gnome-terminal.

https://bugzilla.gnome.org/show_bug.cgi?id=760188

diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index 157ec3a888d7065351e507bbb010824170f4fbbc..9f189ad6265845b57538a89bbd3a85863ae7b80d 100644 (file)
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -1297,7 +1297,10 @@ gdk_toplevel_x11_free_contents (GdkDisplay *display,
     {
       XSyncDestroyCounter (GDK_DISPLAY_XDISPLAY (display), 
                           toplevel->update_counter);
+      XSyncDestroyCounter (GDK_DISPLAY_XDISPLAY (display),
+                           toplevel->extended_update_counter);
       toplevel->update_counter = None;
+      toplevel->extended_update_counter = None;
 
       toplevel->current_counter_value = 0;
     }