Correction of wrong index in gmm saving function

src/gmm.cpp

@@ -132,7 +132,7 @@ void GMM_Model::saveInFiles()
 		for(uint j=0; j<nVARS; j++){
 			mu(j,i) = getMU(i)(j);
 			for(uint k=0; k<nVARS; k++)
-				sigma(j,k + i*(nSTATES+1)) = getSIGMA(i)(j,k);
+				sigma(j,k + i*nVARS) = getSIGMA(i)(j,k);
 		}
 	}