Fix references to constants

Author: carlbennett

src/Controllers/Server/Create.php

@@ -56,9 +56,9 @@ protected function handlePost(): void
     $this->model->server->setDisabled((bool) ($this->model->form_fields['disabled'] ?? null));
     $this->model->server->setOnline((bool) ($this->model->form_fields['online'] ?? null));
 
-    $this->model->error = $this->model->server->commit() ? FormModel::ERROR_SUCCESS : FormModel::ERROR_INTERNAL;
+    $this->model->error = $this->model->server->commit() ? false : FormModel::ERROR_INTERNAL;
 
-    if ($this->model->error === FormModel::ERROR_SUCCESS)
+    if ($this->model->error === false)
     {
       $event = Logger::initEvent(
         \BNETDocs\Libraries\EventLog\EventTypes::SERVER_CREATED,

src/Controllers/User/Delete.php

@@ -58,7 +58,7 @@ public function invoke(?array $args): bool
             if (!$this->model->deleted)
             {
                 $this->model->_responseCode = HttpCode::HTTP_INTERNAL_SERVER_ERROR;
-                $this->model->error = DeleteModel::ERROR_INTERNAL_ERROR;
+                $this->model->error = DeleteModel::ERROR_INTERNAL;
                 return true;
             }
             else