[NUI] Fix svace issue (DFDF221207-00724).

diff --git a/src/Tizen.NUI/src/public/Window/Window.cs b/src/Tizen.NUI/src/public/Window/Window.cs
index c39da9b1911298533032b7a35d0c6de200cecd08..796b7b91d73646290a47e1704343f107c1945916 100755 (executable)
--- a/src/Tizen.NUI/src/public/Window/Window.cs
+++ b/src/Tizen.NUI/src/public/Window/Window.cs
@@ -552,7 +552,7 @@ namespace Tizen.NUI
             {
                 Position2D position = GetPosition();
                 Size2D size = GetSize();
-                Rectangle ret = new Rectangle(position.X, position.Y, size.Width, size.Height);
+                Rectangle ret = new Rectangle(position?.X ?? 0, position?.Y ?? 0, size?.Width ?? 0, size?.Height ?? 0);
                 position.Dispose();
                 return ret;
             }