Evas: Filter: Fix filter length assignment.
Evas: Filter: Fix filter length assignment.

Fun fact... this works on 64 bit systems... well mine anyway, but falls over
in a horrible mess on 32bit systems.

git-svn-id: 6d771e449150288cc513807b7f4d2af31e9482bd@58763 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/uifw-evas,TizenChameleon/uifw-evas,TizenChameleon/uifw-evas,TizenChameleon/uifw-evas