erlang: Make buffered_transport not write out its buffer when closed

This complicates the code, and users can be expected to call flush
when they want to write data to the underlying transport.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@990968 13f79535-47bb-0310-9956-ffa450edef68
1 file changed