TST: Add test for rare reduce dtype mismatch error path
TST: Add test for rare reduce dtype mismatch error path

charris/numpy,endolith/numpy,mattip/numpy,numpy/numpy,anntzer/numpy,anntzer/numpy,pdebuyl/numpy,pdebuyl/numpy,mattip/numpy,anntzer/numpy,rgommers/numpy,jakirkham/numpy,seberg/numpy,seberg/numpy,mhvk/numpy,charris/numpy,numpy/numpy,jakirkham/numpy,pdebuyl/numpy,numpy/numpy,mhvk/numpy,endolith/numpy,mattip/numpy,rgommers/numpy,mhvk/numpy,anntzer/numpy,seberg/numpy,pdebuyl/numpy,endolith/numpy,endolith/numpy,mhvk/numpy,jakirkham/numpy,mhvk/numpy,charris/numpy,seberg/numpy,jakirkham/numpy,rgommers/numpy,jakirkham/numpy,rgommers/numpy,mattip/numpy,charris/numpy,numpy/numpy