[PATCH] grl-plugin-registry: Fix issue with badly created string

[Joaquim Rocha <jrocha igalia com>]

---
 src/grl-plugin-registry.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/grl-plugin-registry.c b/src/grl-plugin-registry.c
index 71278f8..dcf2428 100644
--- a/src/grl-plugin-registry.c
+++ b/src/grl-plugin-registry.c
@@ -244,11 +244,12 @@ get_xml_path_from_plugin_path (const gchar *path)
   }
 
   extension_index = g_utf8_pointer_to_offset (path, extension);
-  path_prefix = (gchar *) g_malloc(extension - path);
+  path_prefix = (gchar *) g_malloc (extension_index + 1);
   g_utf8_strncpy (path_prefix,
 		  path,
 		  extension_index);
-  xml_path =  g_strconcat (path_prefix, "xml", NULL);
+  path_prefix[extension_index] = '\0';
+  xml_path = g_strconcat (path_prefix, "xml", NULL);
   g_free (path_prefix);
 
   return xml_path;
-- 
1.7.0.4