TSocket: Don't close connections when failing to read/write
Client: cpp

Sockets maybe registered to a event base of libevent, so the
following epoll_ctl(2) may fail due to EBADF, or may
delete other sockets. Chaos occurs.

This closes #1217
diff --git a/lib/cpp/src/thrift/transport/TSocket.cpp b/lib/cpp/src/thrift/transport/TSocket.cpp
index 21a9aca..8f0f06c 100644
--- a/lib/cpp/src/thrift/transport/TSocket.cpp
+++ b/lib/cpp/src/thrift/transport/TSocket.cpp
@@ -217,7 +217,6 @@
      * the other side
      */
     if (errno_copy == THRIFT_ECONNRESET) {
-      close();
       return false;
     }
 #endif
@@ -653,7 +652,6 @@
 
     if (errno_copy == THRIFT_EPIPE || errno_copy == THRIFT_ECONNRESET
         || errno_copy == THRIFT_ENOTCONN) {
-      close();
       throw TTransportException(TTransportException::NOT_OPEN, "write() send()", errno_copy);
     }