Conditionalize fuzz tests on feature macros
Conditionalize fuzz tests on feature macros

Do not try to fuzz-test structures/routines that are compiled
out of the library due to library configuration.

Reviewed-by: Kurt Roeckx <bb87b47479d83cec3c76132206933257ded727b2@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/4664)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl