bench: refactor to use dynamic memory allocation at number/uint8/base/add

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

Author: piyxsh31

lib/node_modules/@stdlib/number/uint8/base/add/benchmark/c/benchmark.c

@@ -99,12 +99,13 @@ static uint8_t add( const uint8_t x, const uint8_t y ) {
 * @return elapsed time in seconds
 */
 static double benchmark( void ) {
-	uint8_t x[ 100 ];
+	uint8_t *x;
 	double elapsed;
 	uint8_t y;
 	double t;
 	int i;
 
+	x = (uint8_t *) malloc( 100 * sizeof( uint8_t ) );
 	for ( i = 0; i < 100; i++ ) {
 		x[ i ] = (uint8_t)( 50.0*rand_double() );
 	}
@@ -121,6 +122,7 @@ static double benchmark( void ) {
 	if ( y > 100 ) {
 		printf( "unexpected result\n" );
 	}
+	free( x );
 	return elapsed;
 }