Fix: Add free to avoid memory leak.

Fix: Add free to avoid memory leak.

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Paul Yang <paulyang.inf@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28289)

(cherry picked from commit f9afb3a07eb72428b98e3e31384380564a236700)