Correct error in LocalUniqueChild and use it
Correct error in LocalUniqueChild and use it

jonfoster/pyxb-upstream-mirror,balanced/PyXB,pabigot/pyxb,jonfoster/pyxb1,CantemoInternal/pyxb,jonfoster/pyxb1,jonfoster/pyxb2,pabigot/pyxb,jonfoster/pyxb-upstream-mirror,jonfoster/pyxb2,jonfoster/pyxb2,CantemoInternal/pyxb,balanced/PyXB,balanced/PyXB,CantemoInternal/pyxb,jonfoster/pyxb-upstream-mirror