Fix illegal syntax exposed by nightly change.

dpc · dpc · commit 5548f9139ef0 · 2017-01-19T11:02:23.000-08:00
Fix #103
diff --git a/src/_drain.rs b/src/_drain.rs
@@ -116,7 +116,7 @@ impl<D: Drain> Drain for Filter<D> {
 pub struct MapError<D: Drain, E> {
     drain: D,
     // eliminated dynamic dispatch, after rust learns `-> impl Trait`
-    map_fn: Box<(Fn(D::Error) -> E) + 'static+ Send+Sync>,
+    map_fn: Box<Fn(D::Error) -> E + 'static+ Send+Sync>,
 }
 
 impl<D: Drain, E> MapError<D, E> {

Original file line number	Diff line number	Diff line change
`@@ -116,7 +116,7 @@ impl<D: Drain> Drain for Filter<D> {`
`116`	`116`	`pub struct MapError<D: Drain, E> {`
`117`	`117`	`drain: D,`
`118`	`118`	// eliminated dynamic dispatch, after rust learns `-> impl Trait`
`119`		`- map_fn: Box<(Fn(D::Error) -> E) + 'static+ Send+Sync>,`
	`119`	`+ map_fn: Box<Fn(D::Error) -> E + 'static+ Send+Sync>,`
`120`	`120`	`}`
`121`	`121`
`122`	`122`	`impl<D: Drain, E> MapError<D, E> {`