Evas textblock: Fix the false-positive strict-aliasing issue with gcc.
Evas textblock: Fix the false-positive strict-aliasing issue with gcc.

Only happens with some versions of gcc. I think it's a false positive
because both of the items are compatible.

git-svn-id: 6d771e449150288cc513807b7f4d2af31e9482bd@57267 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

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