test: Workaround bogus refcount leaks with debug build of Python 2.6.9
test: Workaround bogus refcount leaks with debug build of Python 2.6.9

mpi4py/mpi4py,mpi4py/mpi4py,pressel/mpi4py,pressel/mpi4py,pressel/mpi4py,mpi4py/mpi4py,pressel/mpi4py