No need to check for NULL, free_private_key() already does that.
[BearSSL] / samples / key-ica-ec.pem
1 -----BEGIN EC PRIVATE KEY-----
2 MHcCAQEEIEJOkvo4MZ9N+wlTodEzmWor1RauybudPe92K15viDbzoAoGCCqGSM49AwEHoUQDQgAE
3 cC6SggEXbG2r4dFjCUhJ0qY1UtM8c7uyiDeYh/GN4Oxlmg4T9e2RYci2bTOEbq6OVYDNSZ4Hv9Cu
4 nebQsycWoQ==
5 -----END EC PRIVATE KEY-----