clean up LiveFileReader using ready! macro

src/download.rs

@@ -288,19 +288,12 @@ where
                         if offset >= *this.available_file_size {
                             trace!("waiting for inotify events");
                             file.get_or_insert(inner_file);
-                            match this.events.poll_next(cx) {
+                            if ready!(this.events.poll_next(cx)).is_none() {
-                                Poll::Pending => {
-                                    return Poll::Pending;
-                                }
-                                Poll::Ready(Some(_)) => {
-                                    return self.poll_next(cx);
-                                }
-                                _ => {
                                 return Poll::Ready(Some(Err(ErrorInternalServerError(
                                     "inotify stream empty",
                                 ))));
                             }
-                            }
+                            return self.poll_next(cx);
                         }
                     }