#1265 Updated test

Fixed typo with the variable

grails-datastore-gorm-tck/src/main/groovy/grails/gorm/tests/DirtyCheckingAfterListenerSpec.groovy

@@ -37,15 +37,15 @@ class DirtyCheckingAfterListenerSpec extends GormDatastoreSpec {
     void "test state change from listener update the object"() {
 
         when:
-        new Player(name: "John").save()
+        Player john = new Player(name: "John").save()
 
         then:
         new PollingConditions().eventually { listener.isExecuted && Player.count()}
 
         when:
         session.flush()
         session.clear()
-        Player john = Player.get(john.id)
+        john = Player.get(john.id)
 
         then:
         john.attributes