Fix memory leak in padic/test/t-mul.c.
Fix memory leak in padic/test/t-mul.c.

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