atspi: suppress runtime error, build warning

atspi: suppress runtime error, build warning

   [runtime error]
   (1) elm_atspi_bridge.c:2787 _bridge_path_from_object() safety check failed: eo == NULL
   (2) elm_atspi_bridge.c:6184 _bridge_object_register() Unable to register class w/o Elm_Interface_Atspi_Accessible!
   (3) lib/eo/eo.c:697 _eo_call_resolve() in elm_widget.eo.c:169: func 'elm_obj_widget_access_highlight_in_theme_get' (288) could not be resolved for class 'Edje_Object'

   - Note: The access_highlight_in_theme (3) should handle non Elm_LAYOUT_CLASS.
     Or the access_highlight_in_theme should be removed. If the screen-reader
     shows highlight, then the access_highlight_in_theme doesn't make sense.

   [build warning]
   (1) warning: passing argument 2 of '_object_get_bus_name_and_path' discards 'const' qualifier from pointer target type
   (2) warning: passing argument 3 of '_object_get_bus_name_and_path' from incompatible pointer type

Change-Id: I5dbeabf1224dbfdd17fd2d1eb9d72bfff120ccab