[discident-glib] uncompress bug fix

[Bastien Nocera <hadess src gnome org>]

commit 5673e09abd5920ecee51b329f96af6bb855eb17a
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Dec 6 00:27:36 2012 +0100

    uncompress bug fix

 discident-glib/discident-ean-glib.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/discident-glib/discident-ean-glib.c b/discident-glib/discident-ean-glib.c
index 16ddc6b..20b48b7 100644
--- a/discident-glib/discident-ean-glib.c
+++ b/discident-glib/discident-ean-glib.c
@@ -218,13 +218,16 @@ uncompress (const char *data,
 				     G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE,
 				     NULL, NULL)) {
 		g_object_unref (output);
-		/* Probably not compressed */
-		return g_strndup (data, len);
+		return NULL;
 	}
 
 	ret = g_strdup (g_memory_output_stream_get_data ((GMemoryOutputStream *) output));
 	g_object_unref (output);
 
+	/* Probably not compressed */
+	if (ret == NULL)
+		return g_strndup (data, len);
+
 	return ret;
 }