From bc9ef12843aed04709cc31bb4572eec8f4cf624c Mon Sep 17 00:00:00 2001
From: wuaoxiang <os.popen@gmail.com>
Date: Sat, 18 Nov 2023 13:48:46 +0800
Subject: [PATCH] Add support for serializing serde_json::Value::Null (fixes
 #110)

---
 src/ser/part.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ser/part.rs b/src/ser/part.rs
index 1deffa5..c967a19 100644
--- a/src/ser/part.rs
+++ b/src/ser/part.rs
@@ -112,7 +112,7 @@ impl<S: Sink> ser::Serializer for PartSerializer<S> {
     }
 
     fn serialize_unit(self) -> Result<S::Ok, Error> {
-        Err(self.sink.unsupported())
+        self.sink.serialize_none()
     }
 
     fn serialize_unit_struct(self, name: &'static str) -> Result<S::Ok, Error> {