BUG: Fix detection of structured arrays in mrecords
BUG: Fix detection of structured arrays in mrecords

This check would fail on the structured type `np.dtype([])`.

No test, since I don't really understand mrecords

rgommers/numpy,pizzathief/numpy,anntzer/numpy,pdebuyl/numpy,simongibbons/numpy,madphysicist/numpy,charris/numpy,endolith/numpy,anntzer/numpy,mhvk/numpy,WarrenWeckesser/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,grlee77/numpy,pdebuyl/numpy,endolith/numpy,WarrenWeckesser/numpy,seberg/numpy,simongibbons/numpy,pbrod/numpy,rgommers/numpy,pizzathief/numpy,pbrod/numpy,abalkin/numpy,seberg/numpy,madphysicist/numpy,grlee77/numpy,numpy/numpy,simongibbons/numpy,jakirkham/numpy,mattip/numpy,charris/numpy,jorisvandenbossche/numpy,pbrod/numpy,pizzathief/numpy,MSeifert04/numpy,jorisvandenbossche/numpy,numpy/numpy,charris/numpy,abalkin/numpy,MSeifert04/numpy,pdebuyl/numpy,jakirkham/numpy,grlee77/numpy,numpy/numpy,charris/numpy,grlee77/numpy,pdebuyl/numpy,jakirkham/numpy,madphysicist/numpy,pizzathief/numpy,endolith/numpy,pbrod/numpy,pizzathief/numpy,mhvk/numpy,mattip/numpy,WarrenWeckesser/numpy,mattip/numpy,MSeifert04/numpy,anntzer/numpy,MSeifert04/numpy,simongibbons/numpy,MSeifert04/numpy,rgommers/numpy,seberg/numpy,pbrod/numpy,mattip/numpy,madphysicist/numpy,mhvk/numpy,numpy/numpy,abalkin/numpy,simongibbons/numpy,mhvk/numpy,jorisvandenbossche/numpy,mhvk/numpy,rgommers/numpy,seberg/numpy,madphysicist/numpy,jakirkham/numpy,endolith/numpy,grlee77/numpy,WarrenWeckesser/numpy,anntzer/numpy,jakirkham/numpy,jorisvandenbossche/numpy