[BlackBerry] Get rid of return in void method
https://bugs.webkit.org/show_bug.cgi?id=115186

Patch by Konrad Piascik <kpiascik@blackberry.com> on 2013-04-25
Reviewed by Rob Buis.

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPage::setForcedTextEncoding):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149124 268f45cc-cd09-0410-ab3c-d52691b4dbfc