Bug 1389: File masks with time constraints do not work with remote WebDAV files

https://winscp.net/tracker/1389

Source commit: 3530b5b8763e73b2c597d366bdc590336039f46e

source/core/WebDAVFileSystem.cpp

@@ -1888,6 +1888,7 @@ void __fastcall TWebDAVFileSystem::Sink(const UnicodeString FileName,
   assert(File);
   TFileMasks::TParams MaskParams;
   MaskParams.Size = File->Size;
+  MaskParams.Modification = File->Modification;
 
   if (!CopyParam->AllowTransfer(FileName, osRemote, File->IsDirectory, MaskParams))
   {