[gtk+] gdk: Constify argument to gdk_rgba_copy()

[Benjamin Otte <otte src gnome org>]

commit e4c9d1a3214052edffe9cf5376ecc76e958758f4
Author: Benjamin Otte <otte redhat com>
Date:   Sun Dec 5 14:54:43 2010 +0100

    gdk: Constify argument to gdk_rgba_copy()

 gdk/gdkrgba.c |    2 +-
 gdk/gdkrgba.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkrgba.c b/gdk/gdkrgba.c
index c2cf2fc..686d89b 100644
--- a/gdk/gdkrgba.c
+++ b/gdk/gdkrgba.c
@@ -49,7 +49,7 @@ G_DEFINE_BOXED_TYPE (GdkRGBA, gdk_rgba,
  * Since: 3.0
  **/
 GdkRGBA *
-gdk_rgba_copy (GdkRGBA *rgba)
+gdk_rgba_copy (const GdkRGBA *rgba)
 {
   GdkRGBA *copy;
 
diff --git a/gdk/gdkrgba.h b/gdk/gdkrgba.h
index 2b76704..d0d1286 100644
--- a/gdk/gdkrgba.h
+++ b/gdk/gdkrgba.h
@@ -45,7 +45,7 @@ struct _GdkRGBA
 
 #define GDK_TYPE_RGBA (gdk_rgba_get_type ())
 
-GdkRGBA * gdk_rgba_copy (GdkRGBA *rgba);
+GdkRGBA * gdk_rgba_copy (const GdkRGBA *rgba);
 void      gdk_rgba_free (GdkRGBA *rgba);
 
 gboolean  gdk_rgba_parse (GdkRGBA     *rgba,