拿了遗物回档闪退

[reporkey]

反馈个bug
在打完激怒蘑菇的事件后拿了吃寄生回血的那个遗物，想了想不需要就回档了，退出去再继续游戏就闪退了。
不知这是魔理沙的问题还是basemod的问题，回档的时候当前回合拿到的遗物没清除。

06:29:25.457 INFO helpers.EventHelper> TRSR: 0.06
06:29:25.457 INFO helpers.EventHelper> ---------------------------
ERROR: Unspecified key: Mushrooms_MRS in EventHelper.
---------------------------
06:29:25.457 INFO basemod.BaseMod> Looking for custom events...
Exception: java.lang.NullPointerException
06:29:25.497 ERROR core.CardCrawlGame> Exception caught
java.lang.NullPointerException: null
at com.megacrit.cardcrawl.rooms.EventRoom.update(EventRoom.java:55) ~[desktop-1.0.jar:?]
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.update(AbstractDungeon.java:2552) ~[?:?]
at com.megacrit.cardcrawl.core.CardCrawlGame.update(CardCrawlGame.java:878) ~[?:?]
at com.megacrit.cardcrawl.core.CardCrawlGame.render(CardCrawlGame.java:429) [?:?]
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:225) [?:?]
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126) [desktop-1.0.jar:?]
Controllers: removed manager for application, 0 managers active
Game closed.