bench: add opts for halfnormal-mode

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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---

Author: Lokeshranjan8

lib/node_modules/@stdlib/stats/base/dists/halfnormal/mode/benchmark/benchmark.js

@@ -32,16 +32,18 @@ var mode = require( './../lib' );
 
 bench( pkg, function benchmark( b ) {
 	var sigma;
-	var len;
+	var opts;
 	var y;
 	var i;
 
-	len = 100;
-	sigma = uniform( len, EPS, 20.0 );
+	opts = {
+		'dtype': 'float64'
+	};
+	sigma = uniform( 100, EPS, 20.0, opts );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		y = mode( sigma[ i % len ] );
+		y = mode( sigma[ i%sigma.length ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}

lib/node_modules/@stdlib/stats/base/dists/halfnormal/mode/benchmark/benchmark.native.js

@@ -41,16 +41,18 @@ var opts = {
 
 bench( pkg+'::native', opts, function benchmark( b ) {
 	var sigma;
-	var len;
+	var opts;
 	var y;
 	var i;
 
-	len = 100;
-	sigma = uniform( len, EPS, 20.0 );
+	opts = {
+		'dtype': 'float64'
+	};
+	sigma = uniform( 100, EPS, 20.0, opts );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		y = mode( sigma[ i % len ] );
+		y = mode( sigma[ i%sigma.length ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}