[grilo] Allow for empty values when unserializing data

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit 9d0ad39ebe41ac4e1bff84cee1354b4b8474e262
Author: Juan A. Suarez Romero <jasuarez igalia com>
Date:   Thu Jun 17 08:57:49 2010 +0200

    Allow for empty values when unserializing data
    
    It is possible that user serializes, partially or fully, a key with an empty
    string.
    
    In this case, unserialization should recover that value.

 src/data/grl-media.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/data/grl-media.c b/src/data/grl-media.c
index b62ea73..636a503 100644
--- a/src/data/grl-media.c
+++ b/src/data/grl-media.c
@@ -330,7 +330,7 @@ grl_media_unserialize (const gchar *serial)
   g_match_info_free (match_info);
   if (query) {
     registry = grl_plugin_registry_get_instance ();
-    query_regex = g_regex_new ("([^=&]+)=([^=&]+)", 0, 0, NULL);
+    query_regex = g_regex_new ("([^=&]+)=([^=&]*)", 0, 0, NULL);
     g_regex_match (query_regex, query, 0, &match_info);
     while (g_match_info_matches (match_info)) {
       keyname = g_match_info_fetch (match_info, 1);