Update Admin\Install page

app/Models/Pages/Admin/Install.php

@@ -1239,9 +1239,9 @@ class Install extends Admin
             'b_forum_subscriptions'   => 1,
             'b_topic_subscriptions'   => 1,
             'i_email_max_recipients'  => 1,
-            'o_smtp_host'             => NULL,
-            'o_smtp_user'             => NULL,
-            'o_smtp_pass'             => NULL,
+            'o_smtp_host'             => '',
+            'o_smtp_user'             => '',
+            'o_smtp_pass'             => '',
             'b_smtp_ssl'              => 0,
             'b_regs_allow'            => 1,
             'b_regs_verify'           => 1,