fix C compiler warning about unused expression result in test
fix C compiler warning about unused expression result in test

slonik-az/cython,fabianrost84/cython,mrGeen/cython,larsmans/cython,acrispin/cython,achernet/cython,madjar/cython,encukou/cython,mrGeen/cython,fperez/cython,scoder/cython,fabianrost84/cython,ABcDexter/cython,fabianrost84/cython,larsmans/cython,cython/cython,marscher/cython,mcanthony/cython,andreasvc/cython,hickford/cython,scoder/cython,roxyboy/cython,da-woods/cython,da-woods/cython,madjar/cython,encukou/cython,slonik-az/cython,mrGeen/cython,ABcDexter/cython,hhsprings/cython,madjar/cython,fperez/cython,fabianrost84/cython,dahebolangkuan/cython,scoder/cython,dahebolangkuan/cython,JelleZijlstra/cython,andreasvc/cython,fperez/cython,ABcDexter/cython,ChristopherHogan/cython,roxyboy/cython,cython/cython,achernet/cython,JelleZijlstra/cython,c-blake/cython,marscher/cython,marscher/cython,acrispin/cython,cython/cython,marscher/cython,hickford/cython,madjar/cython,slonik-az/cython,c-blake/cython,cython/cython,JelleZijlstra/cython,da-woods/cython,encukou/cython,hhsprings/cython,andreasvc/cython,dahebolangkuan/cython,andreasvc/cython,ABcDexter/cython,hickford/cython,hhsprings/cython,acrispin/cython,ChristopherHogan/cython,hickford/cython,achernet/cython,larsmans/cython,c-blake/cython,dahebolangkuan/cython,ChristopherHogan/cython,encukou/cython,acrispin/cython,c-blake/cython,mrGeen/cython,da-woods/cython,mcanthony/cython,JelleZijlstra/cython,roxyboy/cython,larsmans/cython,andreasvc/cython,fperez/cython,fperez/cython,roxyboy/cython,ABcDexter/cython,JelleZijlstra/cython,hhsprings/cython,achernet/cython,acrispin/cython,mcanthony/cython,encukou/cython,roxyboy/cython,achernet/cython,hickford/cython,scoder/cython,mcanthony/cython,fabianrost84/cython,slonik-az/cython,dahebolangkuan/cython,larsmans/cython,madjar/cython,mrGeen/cython,hhsprings/cython,marscher/cython,c-blake/cython,slonik-az/cython,mcanthony/cython