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-rw-r--r--src/libstore/download.hh2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstore/download.hh b/src/libstore/download.hh
index abc4a828c..c5dd893b5 100644
--- a/src/libstore/download.hh
+++ b/src/libstore/download.hh
@@ -94,6 +94,8 @@ class Store;
struct Downloader
{
+ virtual ~Downloader() { }
+
/* Enqueue a download request, returning a future to the result of
the download. The future may throw a DownloadError
exception. */