add most basic error handling on the decode side

internal/decoders/info_system_name_chunk.go

@@ -9,16 +9,19 @@ type InfoSystemNameChunk struct {
 	Data  InfoSystemNameChunkData
 }
 
-func DecodeInfoSystemNameChunk(bytes []byte) InfoSystemNameChunk {
-	chunk := DecodeChunk(bytes)
-	system_name := string(chunk.ChunkData[0:chunk.Header.DataLen])
+func DecodeInfoSystemNameChunk(bytes []byte) (InfoSystemNameChunk, error) {
+	chunk, err := DecodeChunk(bytes)
+	if err != nil {
+		return InfoSystemNameChunk{}, err
+	}
+	data := InfoSystemNameChunkData{}
 
-	data := InfoSystemNameChunkData{
-		SystemName: system_name,
+	if chunk.Header.DataLen > 0 {
+		data.SystemName = string(chunk.ChunkData[0:chunk.Header.DataLen])
 	}
 
 	return InfoSystemNameChunk{
 		Chunk: chunk,
 		Data:  data,
-	}
+	}, nil
 }