Vendor update

vendor/github.com/json-iterator/go/reflect_extension.go

@@ -341,7 +341,7 @@ func describeStruct(ctx *ctx, typ reflect2.Type) *StructDescriptor {
 		if ctx.onlyTaggedField && !hastag && !field.Anonymous() {
 			continue
 		}
-		if tag == "-" {
+		if tag == "-" || field.Name() == "_" {
 			continue
 		}
 		tagParts := strings.Split(tag, ",")

vendor/github.com/json-iterator/go/reflect_map.go

@@ -290,16 +290,17 @@ func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
 	stream.WriteObjectStart()
 	mapIter := encoder.mapType.UnsafeIterate(ptr)
 	subStream := stream.cfg.BorrowStream(nil)
+	subStream.Attachment = stream.Attachment
 	subIter := stream.cfg.BorrowIterator(nil)
 	keyValues := encodedKeyValues{}
 	for mapIter.HasNext() {
-		subStream.buf = make([]byte, 0, 64)
 		key, elem := mapIter.UnsafeNext()
+		subStreamIndex := subStream.Buffered()
 		encoder.keyEncoder.Encode(key, subStream)
 		if subStream.Error != nil && subStream.Error != io.EOF && stream.Error == nil {
 			stream.Error = subStream.Error
 		}
-		encodedKey := subStream.Buffer()
+		encodedKey := subStream.Buffer()[subStreamIndex:]
 		subIter.ResetBytes(encodedKey)
 		decodedKey := subIter.ReadString()
 		if stream.indention > 0 {
@@ -310,7 +311,7 @@ func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
 		encoder.elemEncoder.Encode(elem, subStream)
 		keyValues = append(keyValues, encodedKV{
 			key:      decodedKey,
-			keyValue: subStream.Buffer(),
+			keyValue: subStream.Buffer()[subStreamIndex:],
 		})
 	}
 	sort.Sort(keyValues)
@@ -320,6 +321,9 @@ func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
 		}
 		stream.Write(keyValue.keyValue)
 	}
+	if subStream.Error != nil && stream.Error == nil {
+		stream.Error = subStream.Error
+	}
 	stream.WriteObjectEnd()
 	stream.cfg.ReturnStream(subStream)
 	stream.cfg.ReturnIterator(subIter)

vendor/github.com/json-iterator/go/reflect_struct_encoder.go

@@ -200,6 +200,7 @@ type stringModeStringEncoder struct {
 
 func (encoder *stringModeStringEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
 	tempStream := encoder.cfg.BorrowStream(nil)
+	tempStream.Attachment = stream.Attachment
 	defer encoder.cfg.ReturnStream(tempStream)
 	encoder.elemEncoder.Encode(ptr, tempStream)
 	stream.WriteString(string(tempStream.Buffer()))