[easytag/easytag-2-2] Fix double free in CDDB dialog error path

[David King <davidk src gnome org>]

commit fcc390506d96e782a3e49c5b98fa270707583e68
Author: David King <amigadave amigadave com>
Date:   Thu Dec 18 16:59:39 2014 +0000

    Fix double free in CDDB dialog error path

 src/cddb.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/cddb.c b/src/cddb.c
index 9b0cf68..420015a 100644
--- a/src/cddb.c
+++ b/src/cddb.c
@@ -3374,6 +3374,7 @@ Cddb_Search_Album_From_Selected_Files (void)
                     && strstr (cddb_out_tmp, CDDB_END_STR) != NULL)
                 {
                     g_free (cddb_out);
+                    cddb_out = NULL;
                     break;
                 }