Make sure circ. def. errors are not lost, part 2

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30377 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fix for factorization of multivariate polynomials, fix } (instead of ])

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30378 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e