Adjust FileTransferError message to use opt response

1 files changed, 4 insertions, 3 deletions

diff --git a/src/libstore/filetransfer.hh b/src/libstore/filetransfer.hh
index 8e31a9e42..25ade0add 100644
--- a/src/libstore/filetransfer.hh
+++ b/src/libstore/filetransfer.hh
@@ -104,10 +104,11 @@ class FileTransferError : public Error
 public:
     FileTransfer::Error error;
     std::shared_ptr<string> response; // intentionally optional
+
     template<typename... Args>
-    FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args)
-        : Error(args...), error(error), response(response)
-    { }
+    FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args);
+
+    virtual const char* sname() const override { return "FileTransferError"; }
 };
 
 bool isUri(const string & s);