[PATCH] fips: Fix memory leaks in FIPS mode

[NIIBE Yutaka]

Clemens Lang wrote:
> * cipher/pubkey.c (_gcry_pk_sign_md): Fix memory leak in FIPS mode when
>   used with SHA1
> * tests/basic.c (check_one_cipher_core): Add missing free in error code
>   triggered in FIPS mode
> * tests/dsa-rfc6979.c (check_dsa_rfc6979): Likewise
> * tests/pubkey.c (check_x931_derived_key): Likewise

Thank you.  Applied to master and 1.10 branch.
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