[NUI] Remove RenderTask itself from the RenderTaskList when disposed

Signed-off-by: Jiyun Yang <ji.yang@samsung.com>

diff --git a/src/Tizen.NUI/src/internal/Common/RenderTask.cs b/src/Tizen.NUI/src/internal/Common/RenderTask.cs
index 47b82238453bfaf6abb2b615394a4b571fb05316..0c126070b36038b3cb87ca343bebb12cfb7e55bd 100755 (executable)
--- a/src/Tizen.NUI/src/internal/Common/RenderTask.cs
+++ b/src/Tizen.NUI/src/internal/Common/RenderTask.cs
@@ -41,6 +41,21 @@ namespace Tizen.NUI
             return ret;
         }
 
+        protected override void Dispose(DisposeTypes type)
+        {
+            if (Disposed)
+            {
+                return;
+            }
+
+            foreach (var window in Application.GetWindowList())
+            {
+                window.GetRenderTaskList().RemoveTask(this);
+            }
+
+            base.Dispose(type);
+        }
+
         internal class Property
         {
             internal static readonly int ViewportPosition = Interop.RenderTask.ViewportPositionGet();