Fixed errors like "Could not pass event PlayerQuitEvent to PuerkasMarriage v1.9.4-BETA java.lang.NullPointerException: Cannot invoke "es.capitanpuerka.marriage.player.MarryPlayer.isMale()" because "gamePlayer" is null at es.capitanpuerka.marriage.database.backends.types.MySQL.uploadPlayerData(MySQL.java:215) ~[?:?] at es.capitanpuerka.marriage.database.backends.types.MySQL.unloadPlayer(MySQL.java:205) ~[?:?] at es.capitanpuerka.marriage.database.DatabaseUtils.savePlayer(DatabaseUtils.java:109) ~[?:?] at es.capitanpuerka.marriage.controller.PlayerController.unregister(PlayerController.java:35) ~[?:?] at es.capitanpuerka.marriage.listener.PlayerListener.onQuit(PlayerListener.java:60) ~[?:?]"