fix for boolean optimization
fix for boolean optimization

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