Fix build on osx.
Fix build on osx.

svn path=/trunk/KDE/kdeedu/marble/; revision=670243

utkuaydin/marble,quannt24/marble,David-Gil/marble-dev,tzapzoor/marble,David-Gil/marble-dev,Earthwings/marble,AndreiDuma/marble,adraghici/marble,probonopd/marble,Earthwings/marble,tzapzoor/marble,tzapzoor/marble,adraghici/marble,tucnak/marble,oberluz/marble,probonopd/marble,tzapzoor/marble,quannt24/marble,tucnak/marble,oberluz/marble,AndreiDuma/marble,Earthwings/marble,oberluz/marble,quannt24/marble,probonopd/marble,probonopd/marble,rku/marble,Earthwings/marble,oberluz/marble,tucnak/marble,rku/marble,tucnak/marble,rku/marble,rku/marble,utkuaydin/marble,David-Gil/marble-dev,probonopd/marble,rku/marble,utkuaydin/marble,David-Gil/marble-dev,AndreiDuma/marble,adraghici/marble,quannt24/marble,adraghici/marble,quannt24/marble,David-Gil/marble-dev,AndreiDuma/marble,AndreiDuma/marble,oberluz/marble,tucnak/marble,probonopd/marble,utkuaydin/marble,quannt24/marble,tzapzoor/marble,oberluz/marble,quannt24/marble,tzapzoor/marble,probonopd/marble,adraghici/marble,tzapzoor/marble,utkuaydin/marble,rku/marble,AndreiDuma/marble,tucnak/marble,Earthwings/marble,David-Gil/marble-dev,Earthwings/marble,adraghici/marble,tzapzoor/marble,utkuaydin/marble,tucnak/marble