do not access NULL image data for native surfaces.
do not access NULL image data for native surfaces.

This fixes another segv that happens when using composite manager.


git-svn-id: 6d771e449150288cc513807b7f4d2af31e9482bd@46265 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

TizenChameleon/uifw-evas,nashidau/Evas-Next,TizenChameleon/evas,TizenChameleon/uifw-evas,nashidau/Evas-Next,TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/evas,nashidau/Evas-Next,TizenChameleon/uifw-evas,TizenChameleon/uifw-evas