style: reorder declarations

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

Author: kgryte

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

@@ -114,11 +114,11 @@ static double benchmark( int iterations, int len ) {
 	struct ndarray *x;
 	stdlib_complex64_t v;
 	int64_t offset;
-	float r;
 	double elapsed;
 	int64_t ndims;
 	float *data;
 	double t;
+	float r;
 	int i;
 
 	ndims = 1;