From de5f791d0457ffa866c371f16a3a53228515bb9a Mon Sep 17 00:00:00 2001
From: jvilk-stripe <43145439+jvilk-stripe@users.noreply.github.com>
Date: Mon, 11 Mar 2019 00:14:13 -0700
Subject: [PATCH] Add virtual destructor to HolderBase (#28)

---
 subprocess.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/subprocess.hpp b/subprocess.hpp
index 1d6fdb8..b22a00a 100755
--- a/subprocess.hpp
+++ b/subprocess.hpp
@@ -618,6 +618,7 @@ public:
 private:
   struct HolderBase {
     virtual void operator()() const = 0;
+    virtual ~HolderBase(){};
   };
   template <typename T>
   struct FuncHolder: HolderBase {