Add hook "message_check_safe"

Steffen185

2013-03-23 1a78f13faab8c107c0a368091229b4445b904fff

 program/steps/mail/func.inc

@@ -608,6 +608,8 @@
            $message->set_safe(true);
          }
        }

        $RCMAIL->plugins->exec_hook('message_check_safe', array('message' => $message));
        break;

      case 2: // always