[gtk+] Fix compilation warning: Use G_GNUC_UNUSED macro

[Javier Jardón <jjardon src gnome org>]

commit 21f6e1841ae1546cf109ed83ff0fbb705212b29d
Author: Javier Jardón <jjardon gnome org>
Date:   Mon Nov 9 21:48:25 2009 +0100

    Fix compilation warning: Use G_GNUC_UNUSED macro
    
    add_builtin_module() is only used into #define block of code

 gtk/gtkimmodule.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkimmodule.c b/gtk/gtkimmodule.c
index 49eb2ab..97967d4 100644
--- a/gtk/gtkimmodule.c
+++ b/gtk/gtkimmodule.c
@@ -279,7 +279,7 @@ correct_localedir_prefix (gchar **path)
 #endif
 
 
-static GtkIMModule *
+G_GNUC_UNUSED static GtkIMModule *
 add_builtin_module (const gchar             *module_name,
 		    const GtkIMContextInfo **contexts,
 		    int                      n_contexts)