Fix a couple of compiler warnings in tests.
Fix a couple of compiler warnings in tests.

da-woods/cython,scoder/cython,cython/cython,fabianrost84/cython,ChristopherHogan/cython,cython/cython,cython/cython,cython/cython,c-blake/cython,c-blake/cython,scoder/cython,c-blake/cython,hhsprings/cython,ChristopherHogan/cython,hhsprings/cython,c-blake/cython,fabianrost84/cython,fabianrost84/cython,c-blake/cython,hhsprings/cython,fabianrost84/cython,hhsprings/cython,da-woods/cython,scoder/cython,fabianrost84/cython,da-woods/cython,da-woods/cython,scoder/cython,hhsprings/cython,ChristopherHogan/cython