fixed JSON bug
fixed JSON bug

jmptrader/objx,dvln/objx,outrightmental/go-objx,yxd-hde/objx,onrik/objx,dvln/objx,pki-io/objx,jmptrader/objx,outrightmental/go-objx,stretchr/objx,yxd-hde/objx,stretchr/objx,pki-io/objx,onrik/objx