Thrift-1393: TTransportException's thrown from THttpClient contain superfluous slashe...

Thrift-1393: TTransportException's thrown from THttpClient contain superfluous slashes in the Exception message
Client : php
Patch: Nick Jones

The THttpClient class ensures the $uri_ property has a slash prefixed by appending one if needed in the constructor. However in THttpClient::read, there are 2 exceptions thrown where a slash is concatenated between the port and uri. This results in a superfluous slash in the TTransportException message.

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1185723 13f79535-47bb-0310-9956-ffa450edef68