HTTPSession: always reset buffer pointers on connect to clear any leftover data from previous requests

Net/src/HTTPSession.cpp

@@ -197,6 +197,9 @@ void HTTPSession::connect(const SocketAddress& address)
 	_socket.connect(address, _timeout);
 	_socket.setReceiveTimeout(_timeout);
 	_socket.setNoDelay(true);
+	// There may be leftover data from a previous (failed) request in the buffer,
+	// so we clear it.
+	_pCurrent = _pEnd = _pBuffer;
 }