[perl-Gtk2] Hush a compiler warning

[Torsten SchÃnfeld <tsch src gnome org>]

commit 3ff058a3b4f3fdf58f4a992a5ff839552509139d
Author: Torsten SchÃnfeld <kaffeetisch gmx de>
Date:   Sun Jan 20 17:52:16 2013 +0100

    Hush a compiler warning

 xs/GdkPixbuf.xs |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/xs/GdkPixbuf.xs b/xs/GdkPixbuf.xs
index c2d402b..42ed8a3 100644
--- a/xs/GdkPixbuf.xs
+++ b/xs/GdkPixbuf.xs
@@ -123,6 +123,7 @@ save_to_sv_callback (const gchar * data,
 
         sv_catpvn_nomg (sv, data, count);
         /* XXX no way to find out if that failed. */
+	PERL_UNUSED_VAR (error);
 
         return TRUE;
 }