Patch for getopt_long.c

[Mathias Bavay]

Hi,

Please find here attached a patch with minor touch up on 
src/lib/libc/stdlib/getopt_long.c :

    * Added an SPDX license identifier;

   * moved the declarations of two variables in order to reduce their scope;


All the best,

Mathias Bavay

1d0
< // SPDX-License-Identifier: BSD-2-Clause
133c132
< 	int cyclelen, i, j, ncycle, nnonopts, nopts;
---
> 	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
145,146c144,145
< 		const int cstart = panonopt_end+i;
< 		int pos = cstart;
---
> 		cstart = panonopt_end+i;
> 		pos = cstart;