mkv.cpp: fix a gcc warning

diff --git a/modules/demux/mkv.cpp b/modules/demux/mkv.cpp
index 5f07f69a8499fb075aae2c81bc50a291c3e6cf26..e72fa3530e631455ade01a82eb52c52b1fb84c5f 100644 (file)
--- a/modules/demux/mkv.cpp
+++ b/modules/demux/mkv.cpp
@@ -333,6 +333,8 @@ typedef struct
 class chapter_codec_cmds_c
 {
 public:
+    virtual ~chapter_codec_cmds_c() {}
+
     void SetPrivate( const KaxChapterProcessPrivate & private_data )
     {
         m_private_data = *( new KaxChapterProcessPrivate( private_data ) );