| API changes | |
| * The output parameter of mbedtls_sha512_finish_ret, mbedtls_sha512_ret, | |
| mbedtls_sha256_finish_ret and mbedtls_sha256_ret now has a pointer type | |
| rather than array type. This removes spurious warnings in some compilers | |
| when outputting a SHA-384 or SHA-224 hash into a buffer of exactly | |
| the hash size. |