[gtk+/composite-templates] cups: Use IPP api when necessary with CUPS 1.6

[Juan Pablo Ugarte <jpu src gnome org>]

commit b0b2bc51bcab8ef2cdde572c57edb36f3032fff7
Author: Rico Tzschichholz <ricotz t-online de>
Date:   Sun Aug 5 09:56:58 2012 +0200

    cups: Use IPP api when necessary with CUPS 1.6

 modules/printbackends/cups/gtkprintbackendcups.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/modules/printbackends/cups/gtkprintbackendcups.c b/modules/printbackends/cups/gtkprintbackendcups.c
index d9110be..c79fe9d 100644
--- a/modules/printbackends/cups/gtkprintbackendcups.c
+++ b/modules/printbackends/cups/gtkprintbackendcups.c
@@ -1835,9 +1835,9 @@ cups_printer_handle_attribute (GtkPrintBackendCups *cups_backend,
 	    info->auth_info_required[i] = g_strdup (ippGetString (attr, i, NULL));
 	}
     }
-  else if (strcmp (attr->name, "number-up-default") == 0)
+  else if (strcmp (ippGetName (attr), "number-up-default") == 0)
     {
-      info->default_number_up = attr->values[0].integer;
+      info->default_number_up = ippGetInteger (attr, 0);
     }
   else
     {