Some NPEs...

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25207 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] initializing Giac with "init geogebra" (needed after r25186)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25208 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e