Ensure the use of the bind function for the socket.

This resolves FTBFS on FreeBSD.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

src/ftplib.cpp

@@ -695,7 +695,7 @@ int ftplib::FtpOpenPort(netbuf *nControl, netbuf **nData, int mode, int dir, cha
 	}
 
 	sin.in.sin_port = 0;
-	if (bind(sData, &sin.sa, sizeof(sin)) == -1)
+	if (::bind(sData, &sin.sa, sizeof(sin)) == -1)
 	{
 		perror("bind");
 		close(sData);