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 60c8c9b775b642bf2fccb03f163b4dca802b5c8d..f75e84f282c788fda0ed9756edf8a7386d70d061 100644 (file)
--- 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);