[gegl-gtk] vala: Also fix cheader name when built against GTK+ 3

[Jon Nordby <jonnor src gnome org>]

commit be844d488dfece1029b6bb19197895c136cfb3f2
Author: Jon Nordby <jononor gmail com>
Date:   Thu Apr 12 20:43:10 2012 +0200

    vala: Also fix cheader name when built against GTK+ 3

 gegl-gtk/GeglGtk.metadata.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gegl-gtk/GeglGtk.metadata.in b/gegl-gtk/GeglGtk.metadata.in
index 362767f..7630a9e 100644
--- a/gegl-gtk/GeglGtk.metadata.in
+++ b/gegl-gtk/GeglGtk.metadata.in
@@ -1 +1,2 @@
 GeglGtk2 cheader_filename="gegl-gtk.h"
+GeglGtk3 cheader_filename="gegl-gtk.h"