[NUI] fix svace issue. check Selected item existance.

diff --git a/src/Tizen.NUI.Components/Controls/RecyclerView/Item/RecyclerViewItem.cs b/src/Tizen.NUI.Components/Controls/RecyclerView/Item/RecyclerViewItem.cs
index a9fa9c6..a31686e 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/RecyclerView/Item/RecyclerViewItem.cs
+++ b/src/Tizen.NUI.Components/Controls/RecyclerView/Item/RecyclerViewItem.cs
@@ -68,14 +68,17 @@ namespace Tizen.NUI.Components
                         else if (collectionView.SelectionMode is ItemSelectionMode.Multiple)
                         {
                             var selectedList = collectionView.SelectedItems;
-                            bool contains = selectedList.Contains(context);
-                            if (newSelected && !contains)
+                            if (selectedList != null)
                             {
-                                selectedList.Add(context);
-                            }
-                            else if (!newSelected && contains)
-                            {
-                                selectedList.Remove(context);
+                                bool contains = selectedList.Contains(context);
+                                if (newSelected && !contains)
+                                {
+                                    selectedList.Add(context);
+                                }
+                                else if (!newSelected && contains)
+                                {
+                                    selectedList.Remove(context);
+                                }
                             }
                         }
                     }