[wophone]Resolve the memory leak of CCAccelerometer.

cocos2dx/platform/wophone/CCAccelerometer_wophone.cpp

@@ -147,6 +147,22 @@ void CCAccelerometer::removeDelegate(CCAccelerometerDelegate* pDelegate)
 
 void CCAccelerometer::addDelegate(CCAccelerometerDelegate* pDelegate)
 {
+    CCAccelerometerHandler *pHandlerIter;
+    CCMutableArray<CCAccelerometerHandler*>::CCMutableArrayIterator  iter;
+
+    if (pDelegate)
+    {
+        for (iter = m_pDelegates->begin(); iter != m_pDelegates->end(); ++iter)
+        {
+            pHandlerIter = *iter;
+            if (pHandlerIter && pHandlerIter->getDelegate() == pDelegate)
+            {
+                // this delegate have existed
+                return;
+            }
+        }
+    }
+
     CCAccelerometerHandler* pHandler = CCAccelerometerHandler::handlerWithDelegate(pDelegate);
 
     if (pHandler)

cocos2dx/sprite_nodes/CCSprite.cpp

@@ -978,12 +978,7 @@ void CCSprite::setDisplayFrame(CCSpriteFrame *pNewFrame)
 
 	CCTexture2D *pNewTexture = pNewFrame->getTexture();
 	// update texture before updating texture rect
-    if ((pNewTexture && m_pobTexture) &&
+    if (pNewTexture != m_pobTexture)
-        (pNewTexture->getName() == m_pobTexture->getName()))
-    {
-        // new texture is same with the current texture,nothing to do
-    }
-    else
     {
         setTexture(pNewTexture);
     }