fop(1): updated to latest optind api

src/fop.rs

@@ -44,13 +44,13 @@ fn main() {
 			Ok(o) => {
 				/* unwrap because Err(OptError::MissingArg) will be returned if
 				 * o.arg is None */
-				let arg = o.arg.unwrap();
+				let arg = o.arg.clone().unwrap();
 				let arg_char = arg.chars().collect::<Vec<char>>();
 				if arg_char.len() > 1 {
 					eprintln!("{}: {}: Not a character.", argv[0], arg);
 					exit(EX_USAGE);
 				} else { d = arg_char[0]; }
-				unsafe { index_arg = *o.ind as usize; }
+				index_arg = o.index();
 			},
 			Err(_) => {
 				eprintln!("{}", usage);