It doesn't get the right errno, and it says "create" not "bind".
```
2022-05-20T03:04:46.498Z DEBUG connectd: Failed to create 2 socket: Success
2022-05-20T03:04:46.500Z DEBUG connectd: REPLY WIRE_CONNECTD_INIT_REPLY with 0 fds
2022-05-20T03:04:46.501Z DEBUG connectd: connectd_init_done
2022-05-20T03:04:46.503Z **BROKEN** connectd: Failed to bind socket for 127.0.0.1:37871: Address already in use
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>