Bug en editar ONU sin OLT y sin template.

src/FTTHBundle/Admin/ONUAdmin.php

@@ -93,7 +93,14 @@ class ONUAdmin extends WorkflowBaseAdmin
         foreach ($marks as $m) {$hidden[$m] = 'hidden';}
 
         if ($subject->getId() || $template) {
-            ($subject->getOlt())? $olt = $subject->getOlt() : $olt = $template->getOlt();
+            if($subject->getOlt()) {
+                $olt = $subject->getOlt();
+            } elseif($template) {
+                $olt = $template->getOlt();
+            } else {
+                $olt = null;
+            }
+            
             if ($olt && $olt->getModel()) {
                 $mark = $olt->getModel()->getMark();
                 $hidden[$mark] = '';