From 13245dc365b0de3547c9845087941f04817e7936 Mon Sep 17 00:00:00 2001
From: Charles Banning <clbanning@gmail.com>
Date: Wed, 17 Feb 2021 09:38:47 -0700
Subject: [PATCH] issue #89

---
 xml.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xml.go b/xml.go
index 8689a41..e26eb48 100644
--- a/xml.go
+++ b/xml.go
@@ -1012,6 +1012,8 @@ func marshalMapToXmlIndent(doIndent bool, b *bytes.Buffer, key string, value int
 	case map[string]interface{}, []byte, string, float64, bool, int, int32, int64, float32, json.Number:
 	case []map[string]interface{}, []string, []float64, []bool, []int, []int32, []int64, []float32, []json.Number:
 	case []interface{}:
+	case nil:
+		value = ""
 	default:
 		// see if value is a struct, if so marshal using encoding/xml package
 		if reflect.ValueOf(value).Kind() == reflect.Struct {