[gtk+] printing: always propagate Collate value

[Felipe Borges <felipeborges src gnome org>]

commit 98080e0289e311998fdc9f2ee61d2a3922e55c81
Author: Felipe Borges <felipeborges gnome org>
Date:   Wed Jan 6 14:47:48 2016 +0100

    printing: always propagate Collate value
    
    https://bugzilla.gnome.org/show_bug.cgi?id=728344

 modules/printbackends/cups/gtkprintbackendcups.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/modules/printbackends/cups/gtkprintbackendcups.c 
b/modules/printbackends/cups/gtkprintbackendcups.c
index 60f5263..cf92a40 100644
--- a/modules/printbackends/cups/gtkprintbackendcups.c
+++ b/modules/printbackends/cups/gtkprintbackendcups.c
@@ -6241,6 +6241,8 @@ cups_printer_prepare_for_print (GtkPrinter       *printer,
     {
       if (gtk_print_settings_get_collate (settings))
         gtk_print_settings_set (settings, "cups-Collate", "True");
+      else
+        gtk_print_settings_set (settings, "cups-Collate", "False");
       gtk_print_job_set_collate (print_job, FALSE);
     }
   else