code refactoring: use local var autoPlaying only if really needed

src/scene.py

@@ -359,11 +359,11 @@ class PlayingScene(GameScene):
             return result
         if not self.game:
             return succeed(True)
-        autoPlaying = self.mainWindow.actionAutoPlay.isChecked()
         self.mainWindow.actionAutoPlay.setChecked(False)
         if self.game.finished():
             self.game = None
             return succeed(True)
+        autoPlaying = self.mainWindow.actionAutoPlay.isChecked()
         return QuestionYesNo(i18n("Do you really want to abort this game?"), always=True).addCallback(
             gotAnswer, autoPlaying)