Fix memory leaks in qadic/test/t-sqrt.c.
Fix memory leaks in qadic/test/t-sqrt.c.

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