Get rid of _fd member variable in fnTcpClient which was shadowing fd() method

lib/tcpip/fnTcpClient.cpp

@@ -57,9 +57,8 @@ class fnTcpClientSocketHandle
 
 fnTcpClient::fnTcpClient(int fd)
 {
-    _fd = fd;
     _connected = true;
-    _clientSocketHandle.reset(new fnTcpClientSocketHandle(_fd));
+    _clientSocketHandle.reset(new fnTcpClientSocketHandle(fd));
     _rxBuffer.clear();
 }
 
@@ -432,23 +431,24 @@ void fnTcpClient::updateFIFO()
 
 #if defined(_WIN32)
     unsigned long count;
-    int res = ioctlsocket(_fd, FIONREAD, &count);
+    int res = ioctlsocket(fd(), FIONREAD, &count);
     res = res != 0 ? -1 : count;
 #else
     int count;
-    int res = ioctl(_fd, FIONREAD, &count);
+    int res = ioctl(fd(), FIONREAD, &count);
     res = res < 0 ? -1 : count;
 #endif
 
     if (res > 0)
     {
         ssize_t result;
+        unsigned count;
 
         for (count = res; count; count -= result)
         {
             size_t old_len = _rxBuffer.size();
             _rxBuffer.resize(old_len + count);
-            result = recv(_fd, &_rxBuffer[old_len], count, 0);
+            result = recv(fd(), &_rxBuffer[old_len], count, 0);
             if (result < 0)
                 result = 0;
             _rxBuffer.resize(old_len + result);
@@ -484,7 +484,7 @@ void fnTcpClient::flush()
         res = recv(fd(), (char *)buf, toRead, MSG_DONTWAIT);
         if (res < 0)
         {
-            Debug_printf("fail on fd %d, errno: %d, \"%s\"\r\n", 
+            Debug_printf("fail on fd %d, errno: %d, \"%s\"\r\n",
                 fd(), compat_getsockerr(), compat_sockstrerror(compat_getsockerr()));
             stop();
             break;

lib/tcpip/fnTcpClient.h

@@ -14,7 +14,6 @@ class fnTcpClient
 {
 protected:
     std::string _rxBuffer;
-    int _fd;
     std::shared_ptr<fnTcpClientSocketHandle> _clientSocketHandle;
     bool _connected = false;