Fix: strict mode

htdocs/core/lib/company.lib.php

@@ -51,7 +51,7 @@ function societe_prepare_head($object)
         $head[$h][2] = 'prospect';
         $h++;
     }
-    if ($object->client==1 || $object->client==3 || (is_object($object->object) && $object->object->client==1) || (is_object($object->object) && $object->object->client==3))
+    if ($object->client==1 || $object->client==3 || (isset($object->object) && $object->object->client==1) || (isset($object->object) && $object->object->client==3))
     {
         $head[$h][0] = DOL_URL_ROOT.'/comm/fiche.php?socid='.$object->id;
         $head[$h][1] = $langs->trans("Customer");