Fix cppcheck warning in getopt_long.c

lib/getopt_long.c

@@ -91,11 +91,11 @@ main(argc, argv)
 int argc;
 char **argv;
 {
+    while (1)
+    {
         int c;
         int digit_optind = 0;
 
-    while (1)
-    {
         int this_option_optind = optind ? optind : 1;
         int option_index = 0;
         static struct option long_options[] =