bug #383, fix the bug in dedicated function as well

include/functions_session.inc.php

@@ -272,7 +272,7 @@ function delete_user_sessions($user_id)
   $query = '
 DELETE
   FROM '.SESSIONS_TABLE.'
-  WHERE data LIKE \'pwg_uid|i:'.(int)$user_id.';%\'
+  WHERE data LIKE \'%pwg_uid|i:'.(int)$user_id.';%\'
 ;';
   pwg_query($query);
 }