From 82ffd9894f69cdc2d209197076ef1aa1dc890bbc Mon Sep 17 00:00:00 2001
From: Mike Jolley <mike.jolley@me.com>
Date: Wed, 29 Mar 2017 13:13:00 +0100
Subject: [PATCH] Filter empty tax values

Fixes #13822
---
 includes/class-wc-ajax.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/class-wc-ajax.php b/includes/class-wc-ajax.php
index 71373dc820c..11a618a25fa 100644
--- a/includes/class-wc-ajax.php
+++ b/includes/class-wc-ajax.php
@@ -1372,7 +1372,7 @@ class WC_AJAX {
 				$line_items[ $item_id ]['refund_total'] = wc_format_decimal( $total );
 			}
 			foreach ( $line_item_tax_totals as $item_id => $tax_totals ) {
-				$line_items[ $item_id ]['refund_tax'] = array_map( 'wc_format_decimal', $tax_totals );
+				$line_items[ $item_id ]['refund_tax'] = array_filter( array_map( 'wc_format_decimal', $tax_totals ) );
 			}
 
 			// Create the refund object.