[EFL] Build fix after r143192 when SPELLCHECK is off

Unreviewed build fix when SPELLCHECK macro is off.

* UIProcess/efl/TextCheckerEfl.cpp:
(WebKit):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145360 268f45cc-cd09-0410-ab3c-d52691b4dbfc