Fixes: NB#188127 -  MBasicListItem crashes when setting ImageWidget into it
Fixes: NB#188127 -  MBasicListItem crashes when setting ImageWidget into it

RevBy: Stanislav

Details:
MBasicListItem::setImageWidget() is trying to add the image to an internal
layout that does not exist.

Do not add to layout if it does not exist.

nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch