MsaCompactor mc = null;
if ( worst_remove > 0 ) {
mc = MsaCompactor.removeWorstOffenders( msa, worst_remove, realign, norm, path_to_mafft );
MsaCompactor mc = null;
if ( worst_remove > 0 ) {
mc = MsaCompactor.removeWorstOffenders( msa, worst_remove, realign, norm, path_to_mafft );