BUG: no buffer reuse in nditer, if there was no buffer previously
BUG: no buffer reuse in nditer, if there was no buffer previously

If the buffer is used or not can possible change during iteration.
In this case, the buffer cannot be reused if it never existed...

gmcastil/numpy,sinhrks/numpy,charris/numpy,KaelChen/numpy,numpy/numpy,Yusa95/numpy,ajdawson/numpy,larsmans/numpy,GrimDerp/numpy,stuarteberg/numpy,githubmlai/numpy,NextThought/pypy-numpy,musically-ut/numpy,anntzer/numpy,ChanderG/numpy,pdebuyl/numpy,githubmlai/numpy,solarjoe/numpy,MaPePeR/numpy,GaZ3ll3/numpy,mingwpy/numpy,gfyoung/numpy,dwillmer/numpy,MichaelAquilina/numpy,ddasilva/numpy,b-carter/numpy,bringingheavendown/numpy,argriffing/numpy,gmcastil/numpy,maniteja123/numpy,drasmuss/numpy,solarjoe/numpy,dwillmer/numpy,bertrand-l/numpy,SiccarPoint/numpy,dch312/numpy,madphysicist/numpy,ekalosak/numpy,hainm/numpy,jankoslavic/numpy,simongibbons/numpy,dato-code/numpy,ekalosak/numpy,rherault-insa/numpy,embray/numpy,jschueller/numpy,chatcannon/numpy,MichaelAquilina/numpy,tdsmith/numpy,b-carter/numpy,charris/numpy,KaelChen/numpy,felipebetancur/numpy,shoyer/numpy,andsor/numpy,pbrod/numpy,endolith/numpy,mingwpy/numpy,ESSS/numpy,anntzer/numpy,dimasad/numpy,Dapid/numpy,ajdawson/numpy,BabeNovelty/numpy,hainm/numpy,numpy/numpy,larsmans/numpy,seberg/numpy,ajdawson/numpy,embray/numpy,rherault-insa/numpy,githubmlai/numpy,anntzer/numpy,ChanderG/numpy,ogrisel/numpy,charris/numpy,sinhrks/numpy,drasmuss/numpy,mindw/numpy,immerrr/numpy,solarjoe/numpy,shoyer/numpy,immerrr/numpy,ahaldane/numpy,leifdenby/numpy,brandon-rhodes/numpy,sonnyhu/numpy,Linkid/numpy,njase/numpy,bertrand-l/numpy,GrimDerp/numpy,ESSS/numpy,jakirkham/numpy,Linkid/numpy,embray/numpy,chiffa/numpy,WillieMaddox/numpy,pizzathief/numpy,cowlicks/numpy,Srisai85/numpy,seberg/numpy,KaelChen/numpy,skymanaditya1/numpy,tdsmith/numpy,WarrenWeckesser/numpy,ContinuumIO/numpy,mathdd/numpy,ViralLeadership/numpy,stuarteberg/numpy,pyparallel/numpy,cjermain/numpy,WillieMaddox/numpy,MaPePeR/numpy,AustereCuriosity/numpy,MSeifert04/numpy,BabeNovelty/numpy,GaZ3ll3/numpy,mwiebe/numpy,ContinuumIO/numpy,larsmans/numpy,naritta/numpy,tacaswell/numpy,cowlicks/numpy,mathdd/numpy,shoyer/numpy,SiccarPoint/numpy,numpy/numpy,mathdd/numpy,ogrisel/numpy,Linkid/numpy,tynn/numpy,MaPePeR/numpy,moreati/numpy,mingwpy/numpy,pbrod/numpy,mattip/numpy,stuarteberg/numpy,brandon-rhodes/numpy,joferkington/numpy,MSeifert04/numpy,trankmichael/numpy,pbrod/numpy,SunghanKim/numpy,musically-ut/numpy,BMJHayward/numpy,nguyentu1602/numpy,kiwifb/numpy,ahaldane/numpy,cjermain/numpy,rhythmsosad/numpy,groutr/numpy,musically-ut/numpy,WarrenWeckesser/numpy,AustereCuriosity/numpy,rudimeier/numpy,seberg/numpy,sonnyhu/numpy,rmcgibbo/numpy,jonathanunderwood/numpy,Anwesh43/numpy,b-carter/numpy,jonathanunderwood/numpy,gfyoung/numpy,rajathkumarmp/numpy,nbeaver/numpy,endolith/numpy,bmorris3/numpy,grlee77/numpy,MSeifert04/numpy,ddasilva/numpy,cowlicks/numpy,rherault-insa/numpy,Linkid/numpy,tdsmith/numpy,nbeaver/numpy,BMJHayward/numpy,trankmichael/numpy,mathdd/numpy,pizzathief/numpy,ChristopherHogan/numpy,dimasad/numpy,pbrod/numpy,anntzer/numpy,has2k1/numpy,ChristopherHogan/numpy,rmcgibbo/numpy,gmcastil/numpy,WillieMaddox/numpy,naritta/numpy,empeeu/numpy,Eric89GXL/numpy,ViralLeadership/numpy,pyparallel/numpy,ChanderG/numpy,GaZ3ll3/numpy,pdebuyl/numpy,ddasilva/numpy,ogrisel/numpy,mortada/numpy,hainm/numpy,jorisvandenbossche/numpy,rudimeier/numpy,grlee77/numpy,simongibbons/numpy,Anwesh43/numpy,argriffing/numpy,bmorris3/numpy,cjermain/numpy,mortada/numpy,simongibbons/numpy,dato-code/numpy,Srisai85/numpy,BabeNovelty/numpy,mindw/numpy,trankmichael/numpy,jakirkham/numpy,nbeaver/numpy,skymanaditya1/numpy,mortada/numpy,mwiebe/numpy,immerrr/numpy,maniteja123/numpy,chiffa/numpy,yiakwy/numpy,andsor/numpy,ahaldane/numpy,rhythmsosad/numpy,mattip/numpy,mwiebe/numpy,rajathkumarmp/numpy,empeeu/numpy,skymanaditya1/numpy,simongibbons/numpy,embray/numpy,githubmlai/numpy,immerrr/numpy,endolith/numpy,rhythmsosad/numpy,pdebuyl/numpy,ahaldane/numpy,rgommers/numpy,pbrod/numpy,tacaswell/numpy,empeeu/numpy,skwbc/numpy,BMJHayward/numpy,Yusa95/numpy,ekalosak/numpy,charris/numpy,pyparallel/numpy,groutr/numpy,rudimeier/numpy,mhvk/numpy,mindw/numpy,andsor/numpy,mattip/numpy,larsmans/numpy,bmorris3/numpy,felipebetancur/numpy,dimasad/numpy,MSeifert04/numpy,bertrand-l/numpy,utke1/numpy,NextThought/pypy-numpy,CMartelLML/numpy,ekalosak/numpy,Eric89GXL/numpy,sinhrks/numpy,empeeu/numpy,bringingheavendown/numpy,abalkin/numpy,madphysicist/numpy,numpy/numpy,leifdenby/numpy,ChristopherHogan/numpy,abalkin/numpy,embray/numpy,SiccarPoint/numpy,groutr/numpy,sigma-random/numpy,naritta/numpy,jankoslavic/numpy,BMJHayward/numpy,chatcannon/numpy,rajathkumarmp/numpy,ChristopherHogan/numpy,ogrisel/numpy,jakirkham/numpy,rgommers/numpy,CMartelLML/numpy,KaelChen/numpy,ogrisel/numpy,dato-code/numpy,endolith/numpy,kiwifb/numpy,joferkington/numpy,seberg/numpy,tacaswell/numpy,Yusa95/numpy,brandon-rhodes/numpy,Anwesh43/numpy,tynn/numpy,sigma-random/numpy,MSeifert04/numpy,jakirkham/numpy,dch312/numpy,sinhrks/numpy,trankmichael/numpy,sigma-random/numpy,BabeNovelty/numpy,dwillmer/numpy,grlee77/numpy,leifdenby/numpy,sigma-random/numpy,NextThought/pypy-numpy,NextThought/pypy-numpy,GaZ3ll3/numpy,Yusa95/numpy,yiakwy/numpy,ssanderson/numpy,rgommers/numpy,dch312/numpy,has2k1/numpy,jankoslavic/numpy,CMartelLML/numpy,tdsmith/numpy,MichaelAquilina/numpy,skwbc/numpy,abalkin/numpy,bmorris3/numpy,ChanderG/numpy,bringingheavendown/numpy,mingwpy/numpy,MichaelAquilina/numpy,madphysicist/numpy,jorisvandenbossche/numpy,musically-ut/numpy,ContinuumIO/numpy,kirillzhuravlev/numpy,moreati/numpy,simongibbons/numpy,GrimDerp/numpy,ESSS/numpy,MaPePeR/numpy,SunghanKim/numpy,ViralLeadership/numpy,yiakwy/numpy,jschueller/numpy,cowlicks/numpy,nguyentu1602/numpy,grlee77/numpy,joferkington/numpy,dwillmer/numpy,pizzathief/numpy,madphysicist/numpy,utke1/numpy,behzadnouri/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,jankoslavic/numpy,shoyer/numpy,brandon-rhodes/numpy,mhvk/numpy,argriffing/numpy,skwbc/numpy,rmcgibbo/numpy,skymanaditya1/numpy,yiakwy/numpy,rajathkumarmp/numpy,rgommers/numpy,felipebetancur/numpy,drasmuss/numpy,ajdawson/numpy,mhvk/numpy,has2k1/numpy,mindw/numpy,felipebetancur/numpy,pizzathief/numpy,has2k1/numpy,kirillzhuravlev/numpy,shoyer/numpy,maniteja123/numpy,GrimDerp/numpy,SunghanKim/numpy,Eric89GXL/numpy,gfyoung/numpy,jschueller/numpy,SunghanKim/numpy,njase/numpy,kiwifb/numpy,mattip/numpy,nguyentu1602/numpy,nguyentu1602/numpy,madphysicist/numpy,kirillzhuravlev/numpy,behzadnouri/numpy,hainm/numpy,CMartelLML/numpy,jonathanunderwood/numpy,naritta/numpy,Anwesh43/numpy,stuarteberg/numpy,mortada/numpy,jschueller/numpy,utke1/numpy,rudimeier/numpy,SiccarPoint/numpy,Dapid/numpy,ssanderson/numpy,ahaldane/numpy,chatcannon/numpy,andsor/numpy,dimasad/numpy,mhvk/numpy,WarrenWeckesser/numpy,ssanderson/numpy,pizzathief/numpy,AustereCuriosity/numpy,cjermain/numpy,jorisvandenbossche/numpy,dch312/numpy,chiffa/numpy,kirillzhuravlev/numpy,njase/numpy,mhvk/numpy,grlee77/numpy,dato-code/numpy,moreati/numpy,behzadnouri/numpy,WarrenWeckesser/numpy,jorisvandenbossche/numpy,sonnyhu/numpy,joferkington/numpy,Dapid/numpy,rhythmsosad/numpy,Eric89GXL/numpy,rmcgibbo/numpy,pdebuyl/numpy,jakirkham/numpy,tynn/numpy,Srisai85/numpy,Srisai85/numpy,sonnyhu/numpy