[libgdata] core: Fix a small memory leak in a date parsing function

[Philip Withnall <pwithnall src gnome org>]

commit 8e2b4040870844b3976b5f087a8f18107988b486
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri Jun 20 10:42:39 2014 +0100

    core: Fix a small memory leak in a date parsing function
    
    https://bugzilla.gnome.org/show_bug.cgi?id=731949

 gdata/gdata-parser.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdata/gdata-parser.c b/gdata/gdata-parser.c
index ff0f768..9d24962 100644
--- a/gdata/gdata-parser.c
+++ b/gdata/gdata-parser.c
@@ -262,6 +262,8 @@ gdata_parser_int64_to_json_iso8601 (gint64 _time)
        retval = g_strjoinv (".000001+00:00", date_time_components);
        g_strfreev (date_time_components);
 
+       g_free (iso8601);
+
        return retval;
 }