[PATCH] Handle NULL state in metafile_read_state_free

[Christian Neumair <cneumair gnome org>]

Before GIO, the code to free the metafile read state handled NULL
states, but now with GIO, it doesn't.

Proposed patch attached - it should fix bug 512042:

http://bugzilla.gnome.org/show_bug.cgi?id=512042

best regards,
 Christian Neumair

-- 
Christian Neumair <cneumair gnome org>

Index: libnautilus-private/nautilus-metafile.c
===================================================================
--- libnautilus-private/nautilus-metafile.c	(Revision 13805)
+++ libnautilus-private/nautilus-metafile.c	(Arbeitskopie)
@@ -1723,6 +1723,10 @@ metafile_read_cancel (NautilusMetafile *
 static void
 metafile_read_state_free (MetafileReadState *state)
 {
+	if (state == NULL) {
+		return;
+	}
+
 	g_object_unref (state->cancellable);
 	g_free (state);
 }