MAINT: fix all build warnings coming from `_hausdorff.pyx`
MAINT: fix all build warnings coming from `_hausdorff.pyx`

matthew-brett/scipy,vigna/scipy,tylerjereddy/scipy,anntzer/scipy,Stefan-Endres/scipy,grlee77/scipy,vigna/scipy,rgommers/scipy,anntzer/scipy,zerothi/scipy,grlee77/scipy,anntzer/scipy,mdhaber/scipy,perimosocordiae/scipy,zerothi/scipy,zerothi/scipy,ilayn/scipy,vigna/scipy,Stefan-Endres/scipy,mdhaber/scipy,andyfaff/scipy,rgommers/scipy,matthew-brett/scipy,e-q/scipy,Eric89GXL/scipy,mdhaber/scipy,anntzer/scipy,endolith/scipy,Stefan-Endres/scipy,andyfaff/scipy,endolith/scipy,ilayn/scipy,perimosocordiae/scipy,matthew-brett/scipy,e-q/scipy,WarrenWeckesser/scipy,tylerjereddy/scipy,vigna/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,zerothi/scipy,matthew-brett/scipy,Eric89GXL/scipy,scipy/scipy,WarrenWeckesser/scipy,scipy/scipy,Eric89GXL/scipy,rgommers/scipy,andyfaff/scipy,e-q/scipy,Stefan-Endres/scipy,mdhaber/scipy,WarrenWeckesser/scipy,ilayn/scipy,zerothi/scipy,scipy/scipy,mdhaber/scipy,Eric89GXL/scipy,scipy/scipy,vigna/scipy,Stefan-Endres/scipy,endolith/scipy,grlee77/scipy,perimosocordiae/scipy,andyfaff/scipy,endolith/scipy,rgommers/scipy,endolith/scipy,Eric89GXL/scipy,scipy/scipy,grlee77/scipy,endolith/scipy,zerothi/scipy,rgommers/scipy,andyfaff/scipy,tylerjereddy/scipy,andyfaff/scipy,tylerjereddy/scipy,matthew-brett/scipy,anntzer/scipy,mdhaber/scipy,grlee77/scipy,Eric89GXL/scipy,ilayn/scipy,ilayn/scipy,e-q/scipy,WarrenWeckesser/scipy,e-q/scipy,perimosocordiae/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,anntzer/scipy,perimosocordiae/scipy,ilayn/scipy,scipy/scipy,perimosocordiae/scipy