compile error (needs fixing properly)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23566 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
fixing mistake in last commit

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23567 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e