fixed memory leak in L&R calculation, gave minor speed improvement
fixed memory leak in L&R calculation, gave minor speed improvement

mittinatten/freesasa,JoaoRodrigues/freesasa,mittinatten/freesasa,mittinatten/freesasa,mittinatten/freesasa,JoaoRodrigues/freesasa,JoaoRodrigues/freesasa,JoaoRodrigues/freesasa