[gnome-control-center] printers: Avoid possible crash

[Marek KaÅÃk <mkasik src gnome org>]

commit 9afed77bdec41a5853be36de960465d92d70b5a8
Author: Marek Kasik <mkasik redhat com>
Date:   Wed Dec 12 12:34:58 2012 +0100

    printers: Avoid possible crash
    
    Unlink given PPD file and free its filename
    as soon as it is not required. This avoids
    possible double free.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=690091

 panels/printers/pp-new-printer.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/panels/printers/pp-new-printer.c b/panels/printers/pp-new-printer.c
index 3da5117..038a2ad 100644
--- a/panels/printers/pp-new-printer.c
+++ b/panels/printers/pp-new-printer.c
@@ -1081,6 +1081,12 @@ get_missing_executables_cb (GObject      *source_object,
   GList    *executables = NULL;
   GList    *item;
 
+  if (data->ppd_file_name)
+    {
+      g_unlink (data->ppd_file_name);
+      g_clear_pointer (&data->ppd_file_name, g_free);
+    }
+
   output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
                                           res,
                                           &error);
@@ -1157,12 +1163,6 @@ DBus method \"MissingExecutables\" to find missing executables and filters.");
       g_object_unref (source_object);
       install_missing_executables_cb (data);
     }
-
-  if (data->ppd_file_name)
-    {
-      g_unlink (data->ppd_file_name);
-      g_clear_pointer (&data->ppd_file_name, g_free);
-    }
 }
 
 static void