Costs of mortgagee subsequent to decree

In finally adjusting the amount to be paid to a mortgagee in case of a foreclosure, sale or redemption, the Court shall, unless in the case of costs of the suit the conduct of the mortgagee has been such as to disentitle him thereto, add to the mortgage-money such costs of the suit and other costs, charges and expenses as have been properly incurred by him since the date of the preliminary decree for foreclosure, sale or redemption up to the time of actual payment.