Fixes crash when opening tournament features in a session

app/src/main/java/net/pokeranalytics/android/util/extensions/RealmExtensions.kt

@@ -82,8 +82,8 @@ fun <T : RealmModel>Realm.updateUsageCount(clazz: Class<T>) {
 		results.forEach { countableUsage ->
 
 			val countable = (countableUsage as CountableUsage)
-			val fieldName = when (clazz) {
-				is TournamentFeature -> "tournamentFeatures.id"
+			val fieldName = when (clazz.kotlin.simpleName) {
+				TournamentFeature::class.simpleName -> "tournamentFeatures.id"
 				else -> "${clazz.simpleName.decapitalize()}.id"
 			}
 			val count = it.where<Session>().contains(fieldName, countable.id).count().toInt()