[NUI][NUI.Components] Fix SVACE issue in CollectionView.

diff --git a/src/Tizen.NUI.Components/Controls/RecyclerView/CollectionView.cs b/src/Tizen.NUI.Components/Controls/RecyclerView/CollectionView.cs
index 6fedd70..95c41dc 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/RecyclerView/CollectionView.cs
+++ b/src/Tizen.NUI.Components/Controls/RecyclerView/CollectionView.cs
@@ -1360,11 +1360,11 @@ namespace Tizen.NUI.Components
 
             if (ScrollingDirection == Direction.Horizontal)
             {
-                ContentContainer.SizeWidth = ItemsLayouter.CalculateLayoutOrientationSize();
+                ContentContainer.SizeWidth = (float)ItemsLayouter?.CalculateLayoutOrientationSize();
             }
             else
             {
-                ContentContainer.SizeHeight = ItemsLayouter.CalculateLayoutOrientationSize();
+                ContentContainer.SizeHeight = (float)ItemsLayouter?.CalculateLayoutOrientationSize();
             }
         }