Apply suggestions from code review

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

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/dnancusumkbn/benchmark/c/benchmark.length.c

@@ -124,8 +124,8 @@ static double benchmark1( int iterations, int len ) {
 	if ( y[ len-1 ] != y[ len-1 ] ) {
 		printf( "should not return NaN\n" );
 	}
-	free(x);
-	free(y);
+	free( x );
+	free( y );
 	return elapsed;
 }
 
@@ -166,8 +166,8 @@ static double benchmark2( int iterations, int len ) {
 	if ( y[ len-1 ] != y[ len-1 ] ) {
 		printf( "should not return NaN\n" );
 	}
-	free(x);
-	free(y);
+	free( x );
+	free( y );
 	return elapsed;
 }