fix patch from master -> stable migration

cosmogramme/sql/patch/patch_237.php

 <?php
 
 $adapter = Zend_Db_Table_Abstract::getDefaultAdapter();
-$adapter->query("ALTER TABLE album ADD status tinyint(1) unsigned DEFAULT NULL");
\ No newline at end of file
+
+try {
+	$adapter->query("select status from album");
+} catch (Exception $e) {
+	$adapter->query("ALTER TABLE album ADD status tinyint(1) unsigned DEFAULT NULL");
+}
\ No newline at end of file