ncat - buffer overflow when -u and --ssl options are specified

```
$ ncat -v
Ncat: Version 7.60 ( https://nmap.org/ncat )
Ncat: You must specify a host to connect to. QUITTING.
$ ncat -u --ssl 127.0.0.1 8080
libnsock nsock_make_socket(): Socket trouble: Protocol not supported
*** buffer overflow detected ***: ncat terminated
Aborted (core dumped)
```
