fixed error where random non-well defined fq elements would be generated.
fixed error where random non-well defined fq elements would be generated.

fredrik-johansson/flint2,dsroche/flint2,fredrik-johansson/flint2,jpflori/flint2,dsroche/flint2,jpflori/flint2,wbhart/flint2,fredrik-johansson/flint2,wbhart/flint2,wbhart/flint2,jpflori/flint2,dsroche/flint2,jpflori/flint2,dsroche/flint2