efl_ui/layout: fix part aliasing for non-legacy widgets

if a non-null value is passed here, this needs to actually evaluate
all the part aliases

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D10091

src/lib/elementary/efl_ui_layout.c

@@ -655,8 +655,8 @@ _elm_layout_part_aliasing_eval(const Evas_Object *obj,
                *part = efl_ui_default_text;
              else
                *part = efl_ui_default_content;
+             return EINA_TRUE;
           }
-        return EINA_TRUE;
      }
 
    if (is_text)