From 0c2bd1b160fda4e77919889ac80f9460967fa251 Mon Sep 17 00:00:00 2001
From: Ebrahim Byagowi <ebrahim@gnu.org>
Date: Sat, 19 Jan 2019 16:30:07 +0330
Subject: [PATCH] [dwrite] Fix delete-non-virtual-dtor warning (#1550)

---
 src/hb-directwrite.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/hb-directwrite.cc b/src/hb-directwrite.cc
index d691d40be..aaf10a1d6 100644
--- a/src/hb-directwrite.cc
+++ b/src/hb-directwrite.cc
@@ -71,6 +71,8 @@ public:
     *fontFileStream = mFontFileStream;
     return S_OK;
   }
+
+  virtual ~DWriteFontFileLoader() {}
 };
 
 class DWriteFontFileStream : public IDWriteFontFileStream
@@ -122,6 +124,8 @@ public:
 
   virtual HRESULT STDMETHODCALLTYPE
   GetLastWriteTime (OUT UINT64* lastWriteTime) { return E_NOTIMPL; }
+
+  virtual ~DWriteFontFileStream() {}
 };