No need to store Kpp explicitly in preconditioner::schur_pressure_correction
No need to store Kpp explicitly in preconditioner::schur_pressure_correction

dondieselkopf/amgcl,dondieselkopf/amgcl,ddemidov/amgcl,ddemidov/amgcl,dondieselkopf/amgcl,ddemidov/amgcl,ddemidov/amgcl