apps/speed: fix segfault while looking up algorithm name
The backport of master commit 5c6a69f5 (apps/speed: fix possible OOB access in some EC arrays) as 1.1.0 commit 4e079413 introduced a regression. The ecdh_choices array is iterated using an element count but is NULL terminated. This means that running 'openssl speed somealgo' will result in a segfault when opt_found hits the NULL entry. Fixes #8243 CLA: trivial Signed-off-by:Jeff Mahoney <jeffm@suse.com> Reviewed-by:
Paul Yang <yang.yang@baishancloud.com> Reviewed-by:
Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/8244)
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