bench: fix dtype

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/stats/base/ndarray/dnanmskrange/benchmark/benchmark.js

@@ -35,6 +35,9 @@ var dnanmskrange = require( './../lib' );
 var options = {
 	'dtype': 'float64'
 };
+var moptions = {
+	'dtype': 'uint8'
+};
 
 
 // FUNCTIONS //
@@ -55,8 +58,8 @@ function createBenchmark( len ) {
 	xbuf = uniform( len, -100.0, 100.0, options );
 	x = new ndarray( options.dtype, xbuf, [ len ], [ 1 ], 0, 'row-major' );
 
-	mbuf = bernoulli( len, 0.2, options );
-	mask = new ndarray( options.dtype, mbuf, [ len ], [ 1 ], 0, 'row-major' );
+	mbuf = bernoulli( len, 0.2, moptions );
+	mask = new ndarray( moptions.dtype, mbuf, [ len ], [ 1 ], 0, 'row-major' );
 
 	return benchmark;