Bug 1715: The last file transfer before creating a remote directory during synchronization is not reported with .NET assembly

https://winscp.net/tracker/1715

Source commit: 8592f97aae500e15bcbdba4e41c9c1e56966308b

dotnet/Session.cs

@@ -963,6 +963,7 @@ namespace WinSCP
                         }
                         else if (groupReader.IsNonEmptyElement(TransferEventArgs.MkDirTag))
                         {
+                            AddSynchronizationTransfer(result, transfer);
                             transfer = null;
                             mkdir = true;
                             // For now, silently ignoring results (even errors)