Backport OPENSSL_strcasecmp fixes from 3.0 branch

[Davide Pesavento]

The recent openssl update to 3.0.2-0ubuntu1.2 in jammy included some buggy changes related to OPENSSL_strcasecmp. Briefly, it's possible for OPENSSL_strcasecmp to be called before the global locale_t object has been initialized, causing a crash in strcasecmp_l. For example, this bug can be trivially triggered with the program below.

#include <openssl/evp.h>
int main()
{
    EVP_PKEY_Q_keygen(NULL, NULL, "EC", "P-256");
}

The problem is already fixed in the openssl-3.0 branch. Please consider backporting this PR https://github.com/openssl/openssl/pull/18293 or updating the ubuntu package to a more recent commit of that branch that includes the fixes.

[Simon Chopin (schopin)]

I *think* this is a duplicate of https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1974037 but I'll keep it separate for now as the API used to trigger the issue isn't the same.

[Davide Pesavento (davidepesa)]

EVP_EC_gen() is just a macro that expands to EVP_PKEY_Q_keygen(), so yeah, it's exactly the same as https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1974037