[gtk+] gtkselection: fix warnings of unused vars on win32

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 8f873f3aa31a5b33795f6ade90c515fd879d6cb5
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Tue Jul 22 17:21:37 2014 +0200

    gtkselection: fix warnings of unused vars on win32

 gtk/gtkselection.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkselection.c b/gtk/gtkselection.c
index a2da673..380a101 100644
--- a/gtk/gtkselection.c
+++ b/gtk/gtkselection.c
@@ -1361,14 +1361,15 @@ selection_set_compound_text (GtkSelectionData *selection_data,
                             const gchar      *str,
                             gint              len)
 {
+  gboolean result = FALSE;
+
+#ifdef GDK_WINDOWING_X11
   gchar *tmp;
   guchar *text;
   GdkAtom encoding;
   gint format;
   gint new_length;
-  gboolean result = FALSE;
 
-#ifdef GDK_WINDOWING_X11
   if (GDK_IS_X11_DISPLAY (selection_data->display))
     {
       tmp = g_strndup (str, len);