[gtkparasite] Revert "inspect-button: Don't use deprecated API"

[Jasper St. Pierre <jstpierre src gnome org>]

commit 253c8c20df79323761cebea5b37b34eee34c0a41
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Feb 25 14:34:49 2013 -0500

    Revert "inspect-button: Don't use deprecated API"
    
    This reverts commit 9145bf801f3f6a7d355a86689d6381be3f21a132.
    
    It seems to break the inspector.

 src/inspect-button.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/inspect-button.c b/src/inspect-button.c
index e41222f..db50e4e 100644
--- a/src/inspect-button.c
+++ b/src/inspect-button.c
@@ -64,7 +64,7 @@ on_highlight_window_show(GtkWidget *window,
 {
     if (gtk_widget_is_composited(parasite->window))
     {
-        gtk_widget_set_opacity(GTK_WINDOW(parasite->highlight_window), 0.2);
+        gtk_window_set_opacity(GTK_WINDOW(parasite->highlight_window), 0.2);
     }
     else
     {