Fix erasure build

src/window.rs

@@ -251,7 +251,7 @@ impl WindowUtil for Window {
             if erasure::recover(
                 id,
                 recycler,
-                window,
+                self,
                 *consumed,
                 (*consumed % WINDOW_SIZE) as usize,
             ).is_err()

src/window_service.rs

@@ -2,8 +2,6 @@
 //!
 use counter::Counter;
 use crdt::{Crdt, NodeInfo};
-#[cfg(feature = "erasure")]
-use erasure;
 use log::Level;
 use packet::{BlobRecycler, SharedBlob};
 use rand::{thread_rng, Rng};