fix final issues (possible null ref + calling wrong function on cleanup)

Assets/ScriptableRenderLoop/HDRenderLoop/Editor/HDRenderLoopInspector.cs

             public readonly GUIContent bigTilePrepass = new GUIContent("Enable big tile prepass", "Toggle");
             public readonly GUIContent clustered = new GUIContent("Enable clustered", "Toggle");
             public readonly GUIContent disableTileAndCluster = new GUIContent("Disable Tile/clustered", "Toggle");
-            public readonly GUIContent disableDeferredShadingInCompute = new GUIContent("Disable deferred shading in compute", "Toggle");
-
-
-
+            public readonly GUIContent disableDeferredShadingInCompute = new GUIContent("Disable deferred shading in compute", "Toggle");
+
+
+
             public readonly GUIContent textureSettings = new GUIContent("Texture Settings");
 
             public readonly GUIContent spotCookieSize = new GUIContent("Spot cookie size");
                     EditorUtility.SetDirty(renderLoop); // Repaint
 
                     // SetAssetDirty will tell renderloop to rebuild
-                    renderLoop.Cleanup();
+                    renderLoop.ClearCachedData();
                 }
 
                 EditorGUI.BeginChangeCheck();

Assets/ScriptableRenderLoop/fptl/FptlLighting.cs

             {
                 base.InternalCleanup();
                 FptlLighting theOwner = owner as FptlLighting;
-                if (owner != null)
+                if (theOwner != null)
                     theOwner.Cleanup();
             }
         }