Update check files

Author: odersky

tests/neg/i11226.check

@@ -1,6 +1,6 @@
 -- Error: tests/neg/i11226.scala:13:36 ---------------------------------------------------------------------------------
 13 |  def test(a: ActorRef): Unit = bus.unsubscribe(a) // error
    |                                    ^
-   |               Cannot resolve reference to type (Unsubscriber.this.bus : ManagedActorClassification).Subscriber.
-   |               Subscriber exists as a member of the self type ActorEventBus of trait ManagedActorClassification
-   |               but it cannot be referenced from a scope that does not extend that trait.
+   |              Cannot resolve reference to type (Unsubscriber.this.bus : ManagedActorClassification).Subscriber.
+   |              Subscriber exists as a member of the self type ActorEventBus of trait ManagedActorClassification
+   |              but it cannot be called on a receiver whose type does not extend trait ManagedActorClassification.

tests/neg/i11226a.check

@@ -1,12 +1,12 @@
 -- [E007] Type Mismatch Error: tests/neg/i11226a.scala:12:48 -----------------------------------------------------------
 12 |  def test(a: ActorRef): Unit = bus.unsubscribe(a) // error
    |                                                ^
-   |                Found:    (a : ActorRef)
-   |                Required: Unsubscriber.this.bus.Subscriber
+   |               Found:    (a : ActorRef)
+   |               Required: Unsubscriber.this.bus.Subscriber
    |
-   |                Note that I could not resolve reference Unsubscriber.this.bus.Subscriber.
-   |                Subscriber exists as a member of the self type ActorEventBus of trait ManagedActorClassification
-   |                but it cannot be referenced from a scope that does not extend that trait
-   |                                 
+   |               Note that I could not resolve reference Unsubscriber.this.bus.Subscriber.
+   |               Subscriber exists as a member of the self type ActorEventBus of trait ManagedActorClassification
+   |               but it cannot be called on a receiver whose type does not extend trait ManagedActorClassification
+   |                                
    |
    | longer explanation available when compiling with `-explain`