[sushi] pdf-loader: don't unref object before using its value

[Cosimo Cecchi <cosimoc src gnome org>]

commit 0d2a2d0a063a4d0b973e3b7ea62149742d0067f1
Author: Philippe Coval <philippe coval eurogiciel fr>
Date:   Wed Apr 10 15:32:28 2013 +0200

    pdf-loader: don't unref object before using its value
    
    This broke PDF preview.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697721

 src/libsushi/sushi-pdf-loader.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/libsushi/sushi-pdf-loader.c b/src/libsushi/sushi-pdf-loader.c
index 4682c1e..04b8f22 100644
--- a/src/libsushi/sushi-pdf-loader.c
+++ b/src/libsushi/sushi-pdf-loader.c
@@ -269,12 +269,13 @@ query_info_ready_cb (GObject *obj,
   }
 
   content_type = g_file_info_get_content_type (info);
-  g_object_unref (info);
 
   if (content_type_is_native (content_type))
     load_pdf (self, self->priv->uri);
   else
     load_openoffice (self);
+
+  g_object_unref (info);
 }
 
 static void