simplify

upsched/upsched.go

@@ -67,19 +67,20 @@ func (us UploadScheduler[K]) Prepare(k K, timeout time.Duration, cb func(K, erro
 		return errors.New("upload key already exists")
 	}
 
-	us.m.Set(
-		k,
-		upload{
-			timeout: timeout,
-			timer: time.AfterFunc(
-				time.Second*time.Duration(timeout),
-				func() {
+	d := time.Second * time.Duration(timeout)
+
+	f := func() {
 		if _, ok := us.m.Get(k); ok {
 			err := us.Finish(k)
 			cb(k, err)
 		}
-				},
-			),
+	}
+
+	us.m.Set(
+		k,
+		upload{
+			timeout: timeout,
+			timer:   time.AfterFunc(d, f),
 		},
 	)