Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3189)

To new test framework
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3189)

There are cases when argc is more trustable than proper argv termination.
Since we trust argc in all other test programs, we might as well treat it
the same way in this program.
Reviewed-by: NMatt Caswell <matt@openssl.org>

When *pp is NULL, don't write garbage, return an unexpected pointer
or leak memory on error.
Reviewed-by: NDr. Stephen Henson <steve@openssl.org>