Fixed repaint problem in Touch

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24119 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fixed NPE (for Touch)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24120 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e