Many acts as it is consumed if passed a consumed input

[Marwes]

Bug found by @avwhite with a minimal reproducing example.

Should be able to fix this later today.

EDIT: Example is actually wrong since you should expect it to return Consumed due to spaces consuming one char. Updated with correct example (which needs to manually create a state or this wont work).

extern crate "parser-combinators" as parser;

use parser::{many, any_char, Parser};
use parser::primitives::{State, Consumed, SourcePosition};

fn main() {
        let state = State { position: SourcePosition { line: 1, column: 1 }, input: "", consumed: Consumed::Consumed };
        let result = many(any_char as fn (_) -> _)
            .parse_state(state);

        assert!(result.is_ok());
        assert_eq!(result.unwrap().1.consumed, Consumed::Empty);

}