commit a6424624feda6f473e49f45f8c4bc32e3523c9e0
author Steve Kondik <shade@chemlab.org> Sat Jul 08 01:49:14 2017 -0700
committer Steve Kondik <shade@chemlab.org> Sat Jul 08 02:28:12 2017 -0700
tree c293d7e3836b0357f1e2e4c483fbb1a6b7a412da
parent 3f744f77f85b96de92fed53a60dc96d7d3f22eb0

Add missing virtual destructors

Fix warnings emitted by Clang:

/home/shade/dev/tigervnc/common/rdr/FdInStream.h:30:9: error: 'rdr::FdInStreamBlockCallback' has virtual functions but non-virtual destructor [-Werror,-Wnon-virtual-dtor]
  class FdInStreamBlockCallback {
        ^
In file included from /home/shade/dev/tigervnc/common/network/TcpSocket.cxx:44:
In file included from /home/shade/dev/tigervnc/common/network/TcpSocket.h:31:
/home/shade/dev/tigervnc/common/network/Socket.h:82:9: error: 'network::ConnectionFilter' has virtual functions but non-virtual destructor [-Werror,-Wnon-virtual-dtor]
  class ConnectionFilter {
        ^
..etc

common/rfb/Timer.h

diff --git a/common/rfb/Timer.h b/common/rfb/Timer.h
index e295b82..78687d1 100644
--- a/common/rfb/Timer.h
+++ b/common/rfb/Timer.h
@@ -49,6 +49,8 @@
       //   appropriate interval.
       //   If the handler returns false then the Timer is cancelled.
       virtual bool handleTimeout(Timer* t) = 0;
+
+      virtual ~Callback() {}
     };
 
     // checkTimeouts()