MOD: change to static_cast for the Scrollbars in Tree
MOD: change to static_cast for the Scrollbars in Tree

--HG--
branch : cppcheck-fix

cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two