From 879636a6bda907f28324340f138d3662602ab6c3 Mon Sep 17 00:00:00 2001
From: Kurt Thiemann <kurt@aternos.org>
Date: Thu, 7 Jul 2022 16:09:03 +0200
Subject: [PATCH] fixed error when updating checksum in AbstractDataProcessor

---
 package.json                               | 2 +-
 src/DataProcessor/AbstractDataProcessor.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index d65bcbb..af733cd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "armarius",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "description": "A JavaScript library to read, write, and merge ZIP archives in web browsers.",
   "repository": "github:aternosorg/armarius",
   "type": "module",
diff --git a/src/DataProcessor/AbstractDataProcessor.js b/src/DataProcessor/AbstractDataProcessor.js
index 3f16904..b6e811a 100644
--- a/src/DataProcessor/AbstractDataProcessor.js
+++ b/src/DataProcessor/AbstractDataProcessor.js
@@ -68,7 +68,7 @@ export default class AbstractDataProcessor extends DataProcessor {
      */
     async read(length) {
         let chunk = await this.generate(length);
-        if(this.postCrc) {
+        if(this.postCrc && chunk !== null) {
             this.postCrc.add(chunk);
         }