THRIFT-3069 fix socket leak if fcntl fails

This closes #419

commit 467f67d13248c433fc3a9b50882e39837dc62376
Author: Jim King <jim.king@simplivity.com>
Date: 2015-04-03T01:01:00Z
diff --git a/lib/cpp/src/thrift/transport/TServerSocket.cpp b/lib/cpp/src/thrift/transport/TServerSocket.cpp
index cb4d1fc..8c8fd73 100644
--- a/lib/cpp/src/thrift/transport/TServerSocket.cpp
+++ b/lib/cpp/src/thrift/transport/TServerSocket.cpp
@@ -344,13 +344,17 @@
   if (flags == -1) {
     int errno_copy = THRIFT_GET_SOCKET_ERROR;
     GlobalOutput.perror("TServerSocket::listen() THRIFT_FCNTL() THRIFT_F_GETFL ", errno_copy);
-    throw TTransportException(TTransportException::NOT_OPEN, "THRIFT_FCNTL() failed", errno_copy);
+    close();
+    throw TTransportException(TTransportException::NOT_OPEN,
+                        "THRIFT_FCNTL() THRIFT_F_GETFL failed", errno_copy);
   }
 
   if (-1 == THRIFT_FCNTL(serverSocket_, THRIFT_F_SETFL, flags | THRIFT_O_NONBLOCK)) {
     int errno_copy = THRIFT_GET_SOCKET_ERROR;
     GlobalOutput.perror("TServerSocket::listen() THRIFT_FCNTL() THRIFT_O_NONBLOCK ", errno_copy);
-    throw TTransportException(TTransportException::NOT_OPEN, "THRIFT_FCNTL() failed", errno_copy);
+    close();
+    throw TTransportException(TTransportException::NOT_OPEN,
+                        "THRIFT_FCNTL() THRIFT_F_SETFL THRIFT_O_NONBLOCK failed", errno_copy);
   }
 
   // prepare the port information
@@ -367,7 +371,8 @@
     if (len > sizeof(((sockaddr_un*)NULL)->sun_path)) {
       int errno_copy = THRIFT_GET_SOCKET_ERROR;
       GlobalOutput.perror("TSocket::listen() Unix Domain socket path too long", errno_copy);
-      throw TTransportException(TTransportException::NOT_OPEN, " Unix Domain socket path too long");
+      throw TTransportException(TTransportException::NOT_OPEN, "Unix Domain socket path too long",
+                                errno_copy);
     }
 
     struct sockaddr_un address;
@@ -520,6 +525,7 @@
   int flags = THRIFT_FCNTL(clientSocket, THRIFT_F_GETFL, 0);
   if (flags == -1) {
     int errno_copy = THRIFT_GET_SOCKET_ERROR;
+    ::THRIFT_CLOSESOCKET(clientSocket);
     GlobalOutput.perror("TServerSocket::acceptImpl() THRIFT_FCNTL() THRIFT_F_GETFL ", errno_copy);
     throw TTransportException(TTransportException::UNKNOWN,
                               "THRIFT_FCNTL(THRIFT_F_GETFL)",
@@ -528,6 +534,7 @@
 
   if (-1 == THRIFT_FCNTL(clientSocket, THRIFT_F_SETFL, flags & ~THRIFT_O_NONBLOCK)) {
     int errno_copy = THRIFT_GET_SOCKET_ERROR;
+    ::THRIFT_CLOSESOCKET(clientSocket);
     GlobalOutput
         .perror("TServerSocket::acceptImpl() THRIFT_FCNTL() THRIFT_F_SETFL ~THRIFT_O_NONBLOCK ",
                 errno_copy);