Check error return from sysconf in secure memory code
Check error return from sysconf in secure memory code

We use the sysconf function to provide details about the page size in the
secure memory code. This function can return -1 on error so we should check
for this before proceeding.

Reviewed-by: Kurt Roeckx <bb87b47479d83cec3c76132206933257ded727b2@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl