[glib/wip/task] GOutputStream: Fix a compiler warning

[Colin Walters <walters src gnome org>]

commit 59d569b56df945265a24bae208d413ea59a767e9
Author: Colin Walters <walters verbum org>
Date:   Sat Dec 15 09:55:39 2012 -0500

    GOutputStream: Fix a compiler warning

 gio/goutputstream.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gio/goutputstream.c b/gio/goutputstream.c
index cdbe66d..a3ac7ad 100644
--- a/gio/goutputstream.c
+++ b/gio/goutputstream.c
@@ -1148,10 +1148,10 @@ async_ready_close_flushed_callback_wrapper (GObject      *source_object,
   GTask *task = user_data;
   GError *error = NULL;
 
+  class = G_OUTPUT_STREAM_GET_CLASS (stream);
+
   if (!g_async_result_legacy_propagate_error (res, &error))
     {
-      class = G_OUTPUT_STREAM_GET_CLASS (stream);
-
       class->flush_finish (stream, res, &error);
     }