BUG: Fixed memory leaks in test_neighborhood_iterator.
BUG: Fixed memory leaks in test_neighborhood_iterator.

teoliphant/numpy-refactor,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint