[gnome-control-center] printers: Fix PpPrinter reference leaks

[Robert Ancell <rancell src gnome org>]

commit e6a05e535e8577b7c51ba96c7f126ebbce22c4cc
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Jun 26 16:51:06 2020 +1200

    printers: Fix PpPrinter reference leaks
    
    They were not unreferenced in the callback.

 panels/printers/pp-jobs-dialog.c   | 2 +-
 panels/printers/pp-printer-entry.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/panels/printers/pp-jobs-dialog.c b/panels/printers/pp-jobs-dialog.c
index 2235ffc8d..08e2dc8ce 100644
--- a/panels/printers/pp-jobs-dialog.c
+++ b/panels/printers/pp-jobs-dialog.c
@@ -389,7 +389,7 @@ update_jobs_list_cb (GObject      *source_object,
 static void
 update_jobs_list (PpJobsDialog *self)
 {
-  PpPrinter *printer;
+  g_autoptr(PpPrinter) printer = NULL;
 
   if (self->printer_name != NULL)
     {
diff --git a/panels/printers/pp-printer-entry.c b/panels/printers/pp-printer-entry.c
index a943f65e5..8a9f353b5 100644
--- a/panels/printers/pp-printer-entry.c
+++ b/panels/printers/pp-printer-entry.c
@@ -440,7 +440,7 @@ on_show_printer_details_dialog (GtkButton      *button,
   new_name = pp_details_dialog_get_printer_name (dialog);
   if (g_strcmp0 (self->printer_name, new_name) != 0)
     {
-      PpPrinter *printer = pp_printer_new (self->printer_name);
+      g_autoptr(PpPrinter) printer = pp_printer_new (self->printer_name);
 
       pp_printer_rename_async (printer,
                                new_name,