From 9b430895623390d7bb6756bf61171999e2a3dad9 Mon Sep 17 00:00:00 2001
From: Illimar Tambek <illimar.tambek@gmail.com>
Date: Fri, 27 Dec 2013 15:39:21 +0200
Subject: [PATCH] Only continue getting checkout value if null

---
 includes/class-wc-checkout.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/class-wc-checkout.php b/includes/class-wc-checkout.php
index de68b042ef1..4efb4433a4b 100644
--- a/includes/class-wc-checkout.php
+++ b/includes/class-wc-checkout.php
@@ -752,7 +752,7 @@ class WC_Checkout {
 
 			$value = apply_filters( 'woocommerce_checkout_get_value', null, $input );
 
-			if ( $value )
+			if ( $value !== null )
 				return $value;
 
 			if ( is_user_logged_in() ) {