From 432131ddc7cbfb5834f3d35722e1905819ea0323 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20FRANCE?=
 <frederic34@users.noreply.github.com>
Date: Wed, 17 Mar 2021 18:21:07 +0100
Subject: [PATCH] fix php8 warning

---
 htdocs/contrat/class/contrat.class.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index 36a97be3b27..02929f281a8 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -9,7 +9,7 @@
  * Copyright (C) 2013		Florian Henry			<florian.henry@open-concept.pro>
  * Copyright (C) 2014-2015	Marcos García			<marcosgdf@gmail.com>
  * Copyright (C) 2018   	Nicolas ZABOURI			<info@inovea-conseil.com>
- * Copyright (C) 2018-2020  Frédéric France         <frederic.france@netlogic.fr>
+ * Copyright (C) 2018-2021  Frédéric France         <frederic.france@netlogic.fr>
  * Copyright (C) 2015-2018	Ferran Marcet			<fmarcet@2byte.es>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -2001,7 +2001,8 @@ class Contrat extends CommonObject
 				$label .= ' '.$this->getLibStatut(5);
 			}*/
 			$label .= '<br><b>'.$langs->trans('Ref').':</b> '.($this->ref ? $this->ref : $this->id);
-			$label .= '<br><b>'.$langs->trans('RefCustomer').':</b> '.($this->ref_customer ? $this->ref_customer : $this->ref_client);
+			$ref_customer = (!empty($this->ref_customer) ? $this->ref_customer : (empty($this->ref_client) ? '' : $this->ref_client));
+			$label .= '<br><b>'.$langs->trans('RefCustomer').':</b> '.$ref_customer;
 			$label .= '<br><b>'.$langs->trans('RefSupplier').':</b> '.$this->ref_supplier;
 			if (!empty($this->total_ht)) {
 				$label .= '<br><b>'.$langs->trans('AmountHT').':</b> '.price($this->total_ht, 0, $langs, 0, -1, -1, $conf->currency);