fix Windows build

`cl` didn't quite like it:

```
error C2445: result type of conditional expression is ambiguous: types 'QByteArray' and 'const char [1]' can be converted to multiple common types
```

just changing the `auto` to `QByteArray` results in the same compile error

Signed-off-by: Jyrki Gadinger <nilsding@nilsding.org>

diff --git a/src/libsync/bulkpropagatorjob.cpp b/src/libsync/bulkpropagatorjob.cpp
index d2989425a318b620c4181865033abf82e893024a..637e46c9a6181b8a340669670b26b0e41d3788ee 100644 (file)
--- a/src/libsync/bulkpropagatorjob.cpp
+++ b/src/libsync/bulkpropagatorjob.cpp
@@ -268,7 +268,7 @@ void BulkPropagatorJob::slotComputeTransmissionChecksum(SyncFileItemPtr item,
 {
     // Compute the transmission checksum.
     const auto computeChecksum = new ComputeChecksum(this);
-    const auto checksumType = uploadChecksumEnabled() ? propagator()->account()->capabilities().preferredUploadChecksumType() : "";
+    const auto checksumType = uploadChecksumEnabled() ? propagator()->account()->capabilities().preferredUploadChecksumType() : QByteArray{""};
     computeChecksum->setChecksumType(checksumType);
 
     connect(computeChecksum, &ComputeChecksum::done, this, [this, item, fileToUpload] (const QByteArray &contentChecksumType, const QByteArray &contentChecksum) {