From: Hannah von Reth <hannah.vonreth@owncloud.com>
Date: Fri, 14 Aug 2020 14:15:30 +0000 (+0200)
Subject: Return empty string instead of 1 as adler32 checksum for empty files
X-Git-Tag: archive/raspbian/3.16.7-1_deb13u1+rpi1~1^2~12^2~21^2~468^2~66
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=1aa1ea7bea5f0921fd925fba042dc1cf0d1e119f;p=nextcloud-desktop.git

Return empty string instead of 1 as adler32 checksum for empty files
---

diff --git a/src/common/checksums.cpp b/src/common/checksums.cpp
index 60c8c9b77..f75e84f28 100644
--- a/src/common/checksums.cpp
+++ b/src/common/checksums.cpp
@@ -114,6 +114,10 @@ QByteArray calcSha1(QIODevice *device)
 #ifdef ZLIB_FOUND
 QByteArray calcAdler32(QIODevice *device)
 {
+    if (device->size() == 0)
+    {
+        return QByteArray();
+    }
     QByteArray buf(BUFSIZE, Qt::Uninitialized);
 
     unsigned int adler = adler32(0L, Z_NULL, 0);