RT783: Minor optimization to ASN1_INTEGER_set
RT783: Minor optimization to ASN1_INTEGER_set

Remove local variable and avoid extra assignment.

Reviewed-by: Emilia Kasper <6521fc25e7624eef7c3a0d89b71de7e612d27d37@silkandcyanide.net>

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