Fix clear Game in Session

app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt

@@ -549,6 +549,9 @@ open class Session : RealmObject(), SessionInterface, Savable,
 					} catch (e: Exception) {
 						null
 					}
+				} else if (value == null) {
+					limit = null
+					game = null
 				}
 			}
 			SessionRow.INITIAL_BUY_IN -> tournamentEntryFee = if (value == null) null else (value as String).toDouble()