In bn_mul_recursive(), make sure the comba routines are only called when both a and b are of the exact right size.  This may change to something better later.
In bn_mul_recursive(), make sure the comba routines are only called
when both a and b are of the exact right size.  This may change to
something better later.

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