fix generated comments thanks to mkhon@github and Ymbirtt@github

asn1c/asn1c.c

@@ -326,7 +326,7 @@ main(int ac, char **av) {
      * of another language.
      */
     if(asn1_compile(asn, skeletons_dir, asn1_compiler_flags, ac + optind,
-                    optind - 1, av - optind)) {
+                    optind, av - optind)) {
         exit(EX_SOFTWARE);
     }