Improve #25.

Author: inamiy

SwiftState/HierarchicalStateMachine.swift

@@ -139,7 +139,6 @@ public class HierarchicalStateMachine<S: StateType, E: StateEventType>: StateMac
 
         let fromState = self.state
         let toState = state
-        _ = fromState => toState
 
         let (fromSubmachine, _) = self._submachineTupleForState(fromState)
         let (toSubmachine, toSubstate) = self._submachineTupleForState(toState)

SwiftState/StateMachine.swift

@@ -504,7 +504,7 @@ public class StateMachine<S: StateType, E: StateEventType>
     {
         var index = handlerInfos.count
 
-        for i in Array(Array(0..<handlerInfos.count).reverse()) {
+        for i in Array(0..<handlerInfos.count).reverse() {
             if handlerInfos[i].order <= newHandlerInfo.order {
                 break
             }