upgrade.php:

- only include common.php if POSTFIXADMIN is not define()d
  Avoids a "already defined" warning in setup.php


git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@375 a1433add-5e2c-0410-b055-b7f2511e0802

upgrade.php

@@ -1,5 +1,7 @@
 <?php
-require_once('common.php');
+if(!defined('POSTFIXADMIN')) {
+	require_once('common.php');
+}
 
 // vim ts=4:sw=4:et
 # Note: run with upgrade.php?debug=1 to see all SQL error messages