Merge pull request rust-lang#3087 from scampi/lineoverflow

fixed display message for the LineOverflow error

Author: topecongiro

src/lib.rs

@@ -100,7 +100,7 @@ pub enum ErrorKind {
     #[fail(
         display = "line formatted, but exceeded maximum width \
                    (maximum: {} (see `max_width` option), found: {})",
-        _0, _1
+        _1, _0
     )]
     LineOverflow(usize, usize),
     /// Line ends in whitespace.