bench: reorder declarations

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

Author: kgryte

lib/node_modules/@stdlib/stats/strided/distances/dminkowski/benchmark/c/benchmark.length.c

@@ -188,6 +188,13 @@ int main( void ) {
 	int i;
 	int j;
 	int p;
+	double elapsed;
+	int count;
+	int iter;
+	int len;
+	int i;
+	int j;
+	int p;
 
 	// Use the current time to seed the random number generator:
 	srand( time( NULL ) );