[F] Fix null

src/main/java/icu/samnyan/aqua/sega/maimai2/model/userdata/UserDetail.kt

@@ -154,8 +154,10 @@ class UserDetail(
     @Transient
     var cmLastEmoneyCredit: Int = 69,
     var mapStock: Int = 0,
-    var currentPlayCount: Int = 0,
-    var renameCredit: Int = 0
+
+    // TODO: Make these non-nullable with default value
+    var currentPlayCount: Int? = 0,
+    var renameCredit: Int? = 0
 ) : Serializable, IGenericUserData {
     override val totalScore: Long
         get() = totalDeluxscore