Uncaught exception in thrift c# driver

A following exception may be occasionally thrown by the current c# thrift driver:

message=Cannot access a disposed object.
Object name: 'System.Net.Sockets.Socket'.

stack=
at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
at System.Net.Sockets.TcpClient.EndConnect(IAsyncResult asyncResult)
at Thrift.Transport.TSocket.ConnectCallback(IAsyncResult asyncres) in d:\BDA-experiments\thrift-0.9.1\lib\csharp\src\Transport\TSocket.cs:line 177

All exceptions should be caught and handled in the Thrift.Transport.TSocket.ConnectCallback and all other callbacks.

proposed fix:
https://github.com/apache/thrift/pull/79