#18891: Adding a default value to ShapePlacementContext.Path

Work Item: 18891

--HG--
branch : 1.x

src/Orchard/ContentManagement/Drivers/ContentPartDriver.cs

@@ -65,7 +65,8 @@ namespace Orchard.ContentManagement.Drivers {
                     var placementContext = new ShapePlacementContext {
                         ContentType = part.ContentItem.ContentType, 
                         Differentiator = editor.GetDifferentiator(),
-                        DisplayType = null
+                        DisplayType = null,
+                        Path = String.Empty
                     };
 
                     var location = descriptor.Placement(placementContext).Location;