Fix a important bug when f_opt and f_raw where the same mpz_poly in size_optimization
Fix a important bug when f_opt and f_raw where the same mpz_poly in size_optimization

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs