cleanup code

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

@@ -82,21 +82,12 @@ fun <T : RealmModel>Realm.updateUsageCount(clazz: Class<T>) {
 		results.forEach { countableUsage ->
 
 			val countable = (countableUsage as CountableUsage)
-			when (clazz) {
-				is TournamentFeature -> {
-					countable.useCount = it.where<Session>().contains(
-						"tournamentFeatures.id",
-						countable.id
-					).count().toInt()
-				}
-				else -> {
-					countable.useCount = it.where<Session>().equalTo(
-						"${clazz.simpleName.decapitalize()}.id",
-						countable.id
-					).count().toInt()
-				}
+			val fieldName = when (clazz) {
+				is TournamentFeature -> "tournamentFeatures.id"
+				else -> "${clazz.simpleName.decapitalize()}.id"
 			}
-
+			val count = it.where<Session>().contains(fieldName, countable.id).count().toInt()
+			countable.useCount = count
 		}
 	}