| Bugfix | |
| * Fix a double-free that happened after mbedtls_ssl_set_session() or | |
| mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED | |
| (out of memory). After that, calling mbedtls_ssl_session_free() | |
| and mbedtls_ssl_free() would cause an internal session buffer to | |
| be free()'d twice. |