crypto/mem.c: check for overflow in size calculation in CRYPTO_aligned_alloc

crypto/mem.c: check for overflow in size calculation in CRYPTO_aligned_alloc

The open-coded implementation performs addition of size and alignment,
that may overflow.

Signed-off-by: Eugene Syromiatnikov <esyr@openssl.org>
Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28059)