don't use isset for bool options in setup.php

diff --git a/utils/setup.php b/utils/setup.php
index 07b929a12344e5775426f8a8a5c4f0327f474ae8..90374e74785175a146a9f567537c23aca5dfdb64 100755 (executable)
--- a/utils/setup.php
+++ b/utils/setup.php
@@ -730,7 +730,7 @@
                }
        }
 
-       if (isset($aCMDResult['drop']))
+       if ($aCMDResult['drop'])
        {
                // The implementation is potentially a bit dangerous because it uses
                // a positive selection of tables to keep, and deletes everything else.