feat: add stats/base/dists/burr-type3/logcdf

Author: vivekmaurya001

lib/node_modules/@stdlib/stats/base/dists/burr-type3/logcdf/benchmark/benchmark.js

@@ -65,6 +65,7 @@ bench( pkg+':factory', function benchmark( b ) {
 	var y;
 	var i;
 
+	len = 100;
 	x = uniform( len, EPS, 10.0 );
 	mylogcdf = logcdf.factory( 5.0, 6.0 );