[gtk+] printing: Fix build with -Werror=format-security

[Rico Tzschichholz <ricotz src gnome org>]

commit 4054d531c32d0d28614435fae1d9041b629197bc
Author: Rico Tzschichholz <ricotz t-online de>
Date:   Wed Mar 6 22:26:21 2013 +0100

    printing: Fix build with -Werror=format-security

 modules/printbackends/cups/gtkprintbackendcups.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modules/printbackends/cups/gtkprintbackendcups.c 
b/modules/printbackends/cups/gtkprintbackendcups.c
index e80821c..4d095de 100644
--- a/modules/printbackends/cups/gtkprintbackendcups.c
+++ b/modules/printbackends/cups/gtkprintbackendcups.c
@@ -637,7 +637,7 @@ gtk_print_backend_cups_print_stream (GtkPrintBackend         *print_backend,
                                                         cups_printer->hostname,
                                                         cups_printer->device_uri,
                                                         GTK_PRINT_BACKEND_CUPS (print_backend)->username);
-          g_snprintf (printer_absolute_uri, HTTP_MAX_URI, cups_printer->printer_uri);
+          g_snprintf (printer_absolute_uri, HTTP_MAX_URI, "%s", cups_printer->printer_uri);
         }
       else
         {