[gtk+] Avoid a compiler warning

[Matthias Clasen <matthiasc src gnome org>]

commit 2036c150eaba4f5e732519d2c30705ee3be2dc2f
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu May 22 06:29:24 2014 -0400

    Avoid a compiler warning

 gtk/gtkcolorchooserwidget.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcolorchooserwidget.c b/gtk/gtkcolorchooserwidget.c
index 4c4cf73..28b057c 100644
--- a/gtk/gtkcolorchooserwidget.c
+++ b/gtk/gtkcolorchooserwidget.c
@@ -274,7 +274,7 @@ update_from_editor (GtkColorEditor        *editor,
                     GParamSpec            *pspec,
                     GtkColorChooserWidget *widget)
 {
-  if (gtk_widget_get_visible (editor))
+  if (gtk_widget_get_visible (GTK_WIDGET (editor)))
     g_object_notify (G_OBJECT (widget), "rgba");
 }