修复当数据改变时index无效
diff --git a/ios/sdk/WeexSDK/Sources/Component/WXCycleSliderComponent.mm b/ios/sdk/WeexSDK/Sources/Component/WXCycleSliderComponent.mm
index 402e592..5bd794b 100644
--- a/ios/sdk/WeexSDK/Sources/Component/WXCycleSliderComponent.mm
+++ b/ios/sdk/WeexSDK/Sources/Component/WXCycleSliderComponent.mm
@@ -528,7 +528,9 @@
     
     WXRecycleSliderView *recycleSliderView = (WXRecycleSliderView *)_view;
     [recycleSliderView removeItemView:view];
-    [recycleSliderView setCurrentIndex:0];
+    if (self.childrenView.count <= _index) {
+        [recycleSliderView setCurrentIndex:0];
+    }
 }
 
 - (void)updateAttributes:(NSDictionary *)attributes