0f6c6a3e80
fixes incorrectly typed return values in libspdm_hmac_new.
Without this commit XCODE5 refuses to build SecurityPkg, with multiple
errors corresponding to the lines fixed above, each of the form:
libspdm_crypt_hmac.c:31:16: error: expression which evaluates to zero treated as a null pointer constant of type 'void *'
I have updated libspdm to the minimum whole build number which includes
the required commit, though higher releases than 3.7.0, up to 3.8.1, are
available.
Signed-off-by: Mike Beaton <mjsbeaton@gmail.com>