prevent empty support messages in help module (Fixes: #3697)

Florian Schaal

2016-05-26 52a8e7e2f53b23f41b40aa5bc5b35f338aaec3dd

 install/update.php

@@ -378,7 +378,7 @@
      } elseif($conf['bind']['installed'] == true) {
         swriteln('Configuring BIND');
         $inst->configure_bind();
         if(!$inst->find_installed_apps('haveged')) {
         if(!is_installed('haveged')) {
            swriteln("[INFO] haveged not detected - DNSSEC can fail");
         }
      } else {